Modification according to review
Move Panel and Floatbar outside
Fix: Draw at wrong position if clicking first
Indention
Fix: Can't capture whole/visible area on certain page
Ctrl+Enter to finish typing in TextInput
Click to draw a point in Freeline mode
Abstract BaseControl._isStartPoint
Add notification if failed to capture screenshot
Fix: Fail to turn gray on some page when entering selection mode
Remove fat arrow for compatibility on Fx 20/21
Fix: Not showing failure notice on fx26/27 & Ctrl+Enter causes floatbar to disappear