Issues that need to be fixed for ~~17.12~~ Refactoring release:
[x] copy / paste clips
[x] project duration
[x] composition : move a_track correctly
[x] geometry keyframes (transform,etc)
[x] slowmotion effect
[x] fix adding clip in bin (corruption with color clip id because of unfinished porting to new method)
[x] split audio
[x] define target track (audio/video) for operations
[x] Clicking away (eg at an empty place of the timeline) should clear clip selection
[x] Allow compositions in groups
[x] Copy/paste compositions
[x] Insert several clips (boiko: https://phabricator.kde.org/D8928 )
[x] Track effects
[x] Track addition/deletion
[x] Bin corruption
[ ] Open older project file (works but untested)
[ ] Adjust effects when cutting / resizing clip (in progress)
[ ] Check audio mix when using several copies of same clip (older Kdenlive versions used different producers, check if mix is clicky)
[x] Tracks not resizable when default size is smaller than track header icons
[x] Match frame feature lost
[x] Do not auto split audio clips when inserting in timeline
[x] Fix errors/crash in clip drag (from clip monitor or subclip)
[x] Reimplement disable timeline in/out for editing (jbm)
[x] monitor effect scene not hidden when deleting effect using it (jbm)
[ ] reimplement rotoscoping effect (jbm: https://phabricator.kde.org/D10772 )
[x] monitor scene vertical offset compared to monitor image (jbm)
[ ] remove all unused files in source code - in progress jbm
[x] Left resize is broken (alcinos)
[x] Change item speed in timeline doesn't work if clip is grouped (jbm)
[x] Insert does not cut clips in upper/lower tracks (jbm)
[x] lock track does not prevent inserting clips (jbm)
[x] restore automatic track feature for compositions (jbm)
[ ] fix freeze on proxy creation (mutex locking issue)
[ ] rewrite clip jobs
[ ] cutting grouped clips does not correctly regroup