CHANGELOG

## [3.0.X] - not release yet
 * @todo Annotate an ellipse with five clicks on the border (https://gitlab.com/vgg/via/-/issues/279)

## [3.0.10] - 04-March-2021
 * n/p now maps unambiguously to next/prev file; left/right arrow keys move to prev/next frame
 * improved error log message when file load issue
 * fixed typo in endpoint url address sent to console for debug (minor non user facing issue)
 * for checkbox attribute type, handle the cases when default_option_id is missing
 * subtitle import now removes all existing subtitle (requested by @albanie)
 * (bugfix) temporal segment selection and subtitle text focus issue fixed, keyboard event handlers only respond when file is loaded
 * (bugfix) _via_view_annotator does not wrongly clear its methods bound to metadata_{add,update} events from _via_data
 * (bugfix) timeline marker for spatial region gets updates correctly, existing event listeners are cleared properly when a new project is loaded
 * (bugfix) check if zoom is enabled before drawing on the zoom canvas
 * move boundary left/right by clicking boundary arrow pads, select a segment moved timeline by 1sec, fixed by handling case when boundary click identifier was 0
 * selection of line and polyline region is now more intuitive (thanks Charles Carman @cscarman, issue 337)
 * point selection checks both dx and dy coordinates (issue 330)
 * region resize operation with zoom activated now removes old region (issue 316)
 * fixed 3 way merge for cases when multiple users are collaboratively working on same image (issue 300, 285)
 * deleting a region in via_image_annotator now clears its on-image metadata editor (issue 341, 342)
 * added python3 script to merge multiple VIA3 projects
 * Fix bug where thumbnail view gets removed after initialisation

## [3.0.9] - 9 Oct. 2020
 * added zoom (i.e. magnifying glass) feature to inspect fine image details in image annotator
 * create subtitle annotator to manage subtitle for audio and video files

## [3.0.8] - 01 July 2020
 * audio amplitude shown in temporal segmentation timeline (experimental feature, hence disabled by default)
 * HTML application (https://gitlab.com/vgg/via/-/blob/via-3.x.y/via-3.x.y/scripts/io/via3_video_annotation_to_coco.html) to export frame level video annotations in COCO format
 * if attribute values shown as rows of temporal segmenter contains numbers, they will be sorted numerically
 * add/delete of timeline entries
 * timeline list can now be reordered using Ctrl + up/down arrow
 * fixed issue with nested spatial region selection

## [3.0.7] - 07 May 2020
 * value (instead of key) shown for SELECT type attributes in video timeline
 * users can select the number of timeline that can be seen at any time
 * timeline entries are taken from both attribute options and new values contained in metadata
 * selected temporal segment can be moved using up/down arrow key to the previous/next timeline
 * added n/p shorcut keys for image annotator to move to next/previous image
 * improve code documentation by adding a description of the structure of VIA3 project json file (see via-3.x.y/CodeDoc.md)
 * added demo for annotation of image pairs (see via/via-3.x.y/dist/demo/via_pair_annotator.html)

## [3.0.6] - 20 August 2019
 * file and spatial metadata editors are now collapsable
 * spatial regions are automatically associated with the selected temporal segment
 * added n/p keyboard shortcut keys to move to next/previous frame
 * spatial metadata z-index increased to avoid hiding behind temporal segment editor

## [3.0.5] - 14 August 2019
 * pack script creates target folders if they are missing (merge request 21)
 * VIA now allows the extreme clicking annotation method for defining rectangular (merge request 22) and circular regions
 * circle selection issue fixed
 * bulk add file uri issue fixed (issue 206)
 * VIA projects created in version 2.x.y can now be imported in VIA version 3 (issue 203)
 * Added file metadata editor (for example: we use file metadata editor to add a caption to each image, audio or video)
 * Merge operation on VIA shared projects now uses 3-way merge algorithm
 * event handler subscription now requires name of the subscriber (useful for deleting selecting subscribers)
 * removed unused code for audiospectrum, export temporal segments to plain csv, project name update fixed

## [3.0.4] - 02 July 2019
 * issue with spatial region attribute definition fixed
 * spatial region drawn on image is not shown after region draw operation completes
 * rectangular region selection shows unwanted marker
 * reduced the z-index of screen annotation editor to avoid collison with VIA page
 * spatial region label visible and is user selectable (using mouse wheel)
 * polygon and polyline drawing issues fixed (Esc to undo vertex addition, Enter to finish)
 * improved bulk file uri addition (list of file URI can be pasted in textarea or imported from a text file)
 * fixed a major issue with code that generated unique file-id and view-id

## [3.0.3] - 26 June 2019
 * csv export: spatial metadata export contains option-id, added notes, removed extra curley brances from csv JSON export "{...}"
 * temporal (z) and spatial coordinates (xy) are represented as numbers with 3 decimal places
 * update spatial region markers (black dots in timeline) when user adds new regions (issue: 195)
 * metadata now gets deleted and are not left flagged as deleted.
 * code cleanup
 * when a file cannot be loaded, an error page is shown which allows update of file properties (issue: 196)
 * VIA now supports collaborative annotation using the VIA share feature

## [3.0.2] - 21 May 2019
 * shape selector icon now gets highlighted
 * fixed issues caused by rename of temporal segment variable's value
 * fixed issue in thumbnail caused by files added using file:// uri (path issue)
 * minor UI updates

## [3.0.1] - 20 May 2019
 * keyboard event listener attached to window instead of via_container to avoid missing keydown events when something else is in focus

## [3.0.0] - 17 May 2019
 * development of via-3.x.y began in Dec. 2018 with the aim to create a basic audio and video annotator
 * no external dependency, self contained and easy to use
 * light weight (complete application fits in a single html file of size ~ 275 KB)
 * manual annotation of local (using file:// uri) and remote (using http:// uri) files
 * supports definition of both temporal segmentation (e.g. from 3.2sec to 8.7sec) and spatial region (e.g. bounding box in still video frame)
 * keyboard shorcuts allow human annotators to be quick with manual annotation
 * annotations can be exported in CSV format
 * to reduce cognitive load on human annotators, VIA3 support for attributes of different types (plain text, drop down, radio, checkbox)
 * self contained demo for audio and video annotation