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## [2.0.X] - not released yet
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* fast annotation mode @todo
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- keyboard input '123' denotes the following operation: select region 1, set 3 as the value of region attribute 2.
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- if there is a single region attribute, the '13' sets 3 as the value of region 1
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- if there are more than 9 regions, '1223' applies operation '23' to region '12'
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- '0' is reserved to set the file attribute
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- '023' assigns value 3 to the file attribute 2
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- provide visual cues to the user when doing these operations (update bottom status bar as keys are pressed)
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* image grid view
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- cancel ongoing image load process
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- add a "UNASSIGNED" group to denote all the files that do not have a value for the group variable
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- preload images in adjacent groups to speed up visualization
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- label subgroup of images in a group based on a certain variable
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## [2.0.12]
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* point region now gets assigned default value (issue 393)
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* filter Image List by Region Attribute (merge request 37, thank you @fvendramin)
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* increased tolerance (from 5px to 10px) so that point region can be selected easily without errornaeously adding a new point region (thank you @richard)
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## [2.0.11] - March 03, 2021
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* polygon points can now be added/deleted using [Command] key and Click in MacOS (issue 335)
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* status messages can now be disabled (issue 328)
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## [2.0.10] - June 08, 2020
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* rewrote COCO import and export (issues 273, 275, 271, 262)
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* COCO export only supports RADIO and DROPDOWN attribute types (as these can only be supported by COCO categories)
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* added tests to ensure that COCO import/export conform to standard COCO dataset
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* malformed entries in project json file are discarded
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* fix for issue #258 - polygon points get bigger with zooming
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* fix for issue #264 to delete region attributes when deleting an attribute
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* fix for issue #259 zoom locking aspect ratio of rectangle resize
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## [2.0.9] - March 02, 2020
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* size of point region shape increases when zoomed in (issue 186)
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* fixed missing 'category_id' in COCO export (issue 243)
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* fixed incomplete COCO format export (issue 208)
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* COCO import distinguishes between rectangle and polygon region (issue 233)
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* incorrect ellipse orientation issue in COCO import (issue 215)
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* details of ellipse and circle region are shown when selected or are being drawn (issue 211)
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* fixed issue with loading filename containing '#' character (issue 254)
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* project import is now compatible with older version of VIA which did not implement rotated ellipse (issue 253)
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## [2.0.8] - June 14, 2019
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* user selected files are loaded more efficiently using URL.createObjectURL() instead of FileReader()
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* annotations import and export in COCO format (http://cocodataset.org/#format-data)
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* removed unused variables and code segments (cleanup)
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* rotated ellipse (feature request 72, thank you @rdroste for the merge request)
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- ellipse rotation has been merged, rectangle rotation has been removed
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- variable names have been changed to follow VIA naming convention
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- function to draw horizontal and vertical lines across the ellipse have been removed
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* show properties of current region (feature request 118)
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* fixed issue with loading a new project when a VIA project is already loaded (issue 185)
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## [2.0.7] - May 01, 2019
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- regions cannot be moved beyond image boundary (issue 173, thank you @zenggyu for bug report)
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- user's mouse cursor coordinate visible (feature request 172)
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- shortcut 'd' now works even when multiple regions are selected (merge request 15)
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## [2.0.6] - March 25, 2019
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* fixed wrong region location for high zoom levels for large images (Closes: #166, thank you @fredowski)
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* Update region colour based on value of a region attribute (issue 175)
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* Relative paths now gets resolved (issue 171)
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* Grid view filter issue with "only first,middle and last image" fixed (issue 167)
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* grid view should only consider files filtered using filename regex in sidebar (issue 176)
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## [2.0.5] - December 03, 2018
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* reverted back to a.dispatchEvent() from a.link() which does not work in Firefox 63
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## [2.0.4] - November 29, 2018
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* fixed annotation download issue encountered in Safari browser (issue 162, thank you @fredowski)
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* region selection state flag is now cleared and re-initialized when a new image is loaded (issue 159)
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* fixed missing state variable `_via_is_ctrl_pressed` issue (issue 160)
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* when drawing polyshape, [Enter] finishes drawing and [Backspace] deletes last vertex (issue 163, 164)
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* improved subselection of images in a group (image grid view)
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* keyboard handling for zoom +/-/= changed from e.which() to e.key() (merge request 10 contributed by @fredowski)
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* simplified and improved keyboard shortcut keys, global shortcut keys (like next/prev image) are active even when canvas is not in focus
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* fix issues with on-image annotation editor (issue 155)
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* on-image annotation editor shown automatically when a new region is drawn
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* fixed issue with attributes of type checkbox (issue 158)
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* on image annotation editor is not shown if region attributes are not defined
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## [2.0.3] - October 25, 2018 (REVOKED: Bug with region resize)
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* REVOKED
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## [2.0.2] - October 10, 2018
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* bounding boxes can now be drawn using touchscreen in mobile devices (more tests needed)
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* annotation editor now supports single region on-image editor (contributed by GYOUNG-YOON RYOO)
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* anotations downloaded as image is now unaffected by current zoom level(issue 154)
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## [2.0.1] - September 26, 2018
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* clicking or selecting a row in annotation editor (at bottom) should select the corresponding region. (issue 137)
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* converted svg logo to use standard font
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* zoom is enabled with [Ctrl] + mouse wheel (issue 143)
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* fixed polygon first vertex resize issue (issue 146)
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* annotations overlaid on image can now be downloaded as an image (issue 24); does not work with images added as URL (browser security)
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* import annotations: handle entries for which file_size = -1 (i.e. unknown)
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* When zoom is active, Shift + mouse wheel moves horizontal scroll bar
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## [2.0.0] - July 15, 2018
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* rectangles can now be resized from edges (issue 120)
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* added POLYLINE shape
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- polygon region shape coordinates set does not end with the first coordinate (closed loop is defined by the shape: polygon, polyline)
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* renamed many methods and variables
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* attributes editor
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- added _via_attributes{'region','file'} and removed _via_region_attributes, _via_file_attributes
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- attributes add/remove/update from left sidebar panel
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- attribute types: text (default), checkbox, radio, dropdown, image (from url or base64 encoded image data)
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* annotation editor
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- similar to previous versions (spreadsheet like editor) supporting attribute types: text, checkbox, radio, etc
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- tabbed panel for region and file attribute editor
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- change size of contents and panel
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* via project save/load
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- everything (annotations, attributes, application settings, etc) can now be saved as a VIA project (a json file)
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* exported csv annotation header line does not contain "#" (this may be a breaking change) (issue 122)
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* zoom level does not reset when navigating prev/next images (issue 125)
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* VIA project: open/save
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- image file list can be filtered using regular expression
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- preset filters for image file list
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- shortcuts to add files to project (local, url) and remove files from project
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- files in local disk drive can also be added using absolute path (e.g. /home/tlm/image1.jpg)
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- project settings
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* paste regions in multiple images and option to undo this operation (issue 123)
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* (simplified code) image content is shown using <img> instead of <canvas> (region shapes still shown using <canvas>)
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* image grid to perform bulk operations on a set of images (like changing file attribute of multiple images)
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- group by operation supported on file and region attributes
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- multiple groups can be created
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- next/prev page navigation
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- increase/decrease size of image shown in image grid
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* images are preloaded and buffered to allow faster and smoother prev/next image navigation
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* image data can be pulled from custom locations in local disk in order to resolve image files
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* shortcut toolbar (in top) now uses icons from material icon set (https://material.io/icons/)
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* updated ImageMetadata() and RegionMetadata()
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* removed persistence of annotation data in browser cache (i.e. localStorage)
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- this feature proved difficult to maintain for cross browser support
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- uses "beforeunload" event to warn users of data loss
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* minor improvements
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- updated region shape color to yellow
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- selected regions can be precisely moved by 1 pixel using arrow keys (press Shift to move by 10 pixel)
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- move multiple selected regions
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- {polygon, polyline, point} regions can now be drawn inside existing regions (i.e. nested regions)
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- both polygon and polyline shape drawing operation is now ended by pressing [Enter] key
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- when region is selected, mouse wheel can be used to change the region label
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- center of circle and ellipse shapes remain fixed to mousedown location (major issue in 1.0.x versions)
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* updated regression test cases
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* polygon vertex can be added and removed (issue 134)
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## [1.0.5] - January 16, 2018
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* (code contributions from Stefan Mihaila) via.js codebase improvement, wider web browser support (IE 10, IE 11 and Opera 12)
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* added Contributors.md file to record contributions to VIA codebase
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* removed 'localStorage.clear()' to avoid SecurityError in Safari browser (issue 85 and 108)
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## [1.0.4] - October 17, 2017
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* fixed polygon copy/paste/resize issue (issue 107)
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## [1.0.3] - August 07, 2017
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* CSV export now does not add extra comma to each line (issue 103)
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## [1.0.2] - August 04, 2017 (REVOKED: Broken CSV export)
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* removed free resize of ellipse from any edge (issue 100)
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* fixed free resize of rectangle (issue 101)
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* fixed 1-pixel bug (first set image space coordinate, then set canvas coordinate. see issue 96) for region resize and move
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* press Ctrl while resizing to preserve the aspect ratio of rectangle (issue 98)
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* fixed issue with CSV files containing newline character \r or \r\n (issue 102)
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* top menu bar remains consistent event when the user scrolls the window
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## [1.0.1] - June 11, 2017
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* fixed issue 33 : Annotations cannot be imported from file of type application/vnd.ms-excel
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* fixed issue 96 : A major bug in how canvas coordinates are computed
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## [1.0.0] - April 04, 2017
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* file-attributes support added (useful for weakly supervised learning)
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* spreadsheet like editor for region and file attributes
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* visualization of loaded image list improved
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* user annotation data cached in browser's localStorage (for data recovery on browser crash)
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* zoom in/out support
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* improved performance using multi-layered canvas for image and annotations
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* new user interface layout (added toolbar on top navigation panel)
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* added Getting Started guide and License to help menu
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* CSV import/export now conforms to RFC 4180 standard
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* added some basic unit tests
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* added support for point regions (useful for landmark annotations)
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## [1.0.0-beta] - 2017-03-15
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* beta release for VIA 1.0.0
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## [0.1b] - 2016-10-24
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* first release of VGG image annotator
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* supports following region shape: rectangle, circle, ellipse, polygon
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* contains basic image region operations such as move, resize, delete
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* Ctrl a/c/v to select all, copy and paste image regions
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* import/export of region data from/to text file in csv,json format
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* display list of loaded images
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