Fixed #173 #157 When CollisionShape2D deleted, parent CollisionObject should get updated as well
Set multi-jobs build option defaul to no
Add possibility to limit frame to main loop (application/target_fps)

target-fps working, and use fixed physics step before adding physics-fps in project setting

Complete implementation of framelimit

Conflicts:
	main/main.cpp
fix render sprite used atlas texture position error
fix a mistake
fix atlas texture algo
Implement thread id in windows platform
Ignore doc_data_compressed.h
Remove auto-generated doc_data_compressed.h
Fix Variant vector2/vecotor3 multiply bug
Lift Godot GLView update frequency from 30 to 60
Add anchor options "Center"
Add maya style navigation scheme to 3d vieewport
Disable transform operation when navigation
Fix bug in 3d navigation scheme selection; Add modo navigation scheme
Keep selection from been cleared when navigating in 3d viewport

Conflicts:
	tools/editor/plugins/spatial_editor_plugin.cpp
Hold shift to speedup pan/zoom in maya navigation scheme
Add hotkey for switching viewports

Hotkey added
Space to toggle maximize viewport

Cleanup debug output
Add Matrix3::get_scale() binding