Progress dialog is now modal.
Don't allow modifiers for predefined shortcuts
Start support for multi-instance (Tracker)
Merge branch 'Release-0.9.4' of https://github.com/MrKepzie/Natron into workshop
update sequence parsing
Fix colour picker interaction when roto is activated + fix deadlock in
video engine
Fix deadlock
Adjust all application's menu to the same font size. Also fixed a crash
in the histogram GUI.
Fix deadlock: take mutex for as short as possible
add a few asserts
NodeGui: setDefaultGradientColor must be called after initializing all gradients (may fix https://github.com/MrKepzie/Natron/issues/46)

see https://github.com/MrKepzie/Natron/issues/46
Add asserts
Merge branch 'workshop' of https://github.com/MrKepzie/Natron into workshop
The begin/end render count is thread local storage!!
The right click menu of the curve editors now has an entry
where you can select whether you want the curve to update rendering
only when you release the mouse.
This is linked to a setting in the preferences panel.
This option also applies to sliders of parameters.

This can be really handy for slower computers.
CurveWidget: build menu on right click always
Fixed one bug in MoveControlPointsUndoCommand.
Also detail the hint of the new setting
checkClipPref: give good reason for value changed.
Don't render while processing clipChangedAction, because we will render
anyway when we"re finished processing it.
Don't call checkClipPRef on param instance changed