Bug Fixes
- components: check subTree null, related to #1760 (9606ae3)
- electron: enable CORS for socket.io server (fix #1813) (#1815) (dc9d010)
- layer select overflowing (#1790) (e9398cd)
- timeline: can't drag view to the bottom (675952e)
- timeline: layer height changes glitching (9cb692b)
- typo in title of welcome slideshow (#1818) (48157f6)
- vue2: vuex getters undefined check, closes #1757 (107589b)