resolves #551: now notes on selected panes can be removed
add "Add..." tab to shapes lab tab control
Merge branch 'dev_1.9' into Feature-CustomShapes
Fixed #235: quick properties doesn't work for text placeholders
Fixed a bug in f29faa8 that crashes ppt when double click the slide
Fixed a bug that causes QuickProperty not working when sub-window handle is re-created
Fixed potential bug that causes copy functions dropped
change the height of shapes lab setting dialog;
fixes a potential bug that distort the initial view of shapes lab
slightly enhance PPCopy event
make double buffer for shapes lab only available to office 2010, which gives a better support
update version info for release 1.9.0.1
Merge branch 'release' of https://github.com/PowerPointLabs/repo into release
update version info for release 1.9.0.2 (online)
update version info for release 1.9.0.2 (offline, application version number is 1.9.0.3)
Merge branch 'release' into Feature-CustomShapes
change view from tab control into combo box + flow layout
make shape loading less laggy on office 2013
Merge branch 'release' into Feature-CustomShapes
backend of multi-category done, need to be verified
some regression due to commit #04b0a32  fixed