Fixed VS2010 compiler errors
format
Create Unit Testing Project
Ignore Makefile.Debug & Makefile.Release
Ignore .pro.user
minor cleanup
Some tool improvements.

1. More natural tablet pressure.
2. More natural pencil stroke.
3. Pencil plots the first point (just after mouse/pen down)
Merge pull request #200 from eVoLuTiVeMEDIA/master

Some tool improvements.
Merge branch 'master' of https://github.com/pencil2d/pencil
Fixed view panning from [space] shortcut.
Crop reference (boundaries rectangle) + two grids + ui buttons

1. If you zoom out, you will see the crop reference. May be useful for
saving or exporting images.
2. Added 2 toggle buttons to select the 2 types of grid ( near
onion-skin, at the bottom right of the screen )
A new complete grid can be added in the future.
Merge pull request #201 from eVoLuTiVeMEDIA/master

Added grid references, some fixes. Code simplification and comments
Merge pull request #7 from pencil2d/master

another update from pencil2d
Fixed the intereferences between fixed and user shortcuts.
Timeline: layers are now ordered from bottom to top

1. According to a lot of users, this new order of layers seems visually
clearer.
2. Fixed console error message: "Duplicate QLayout for
popupcolorpalette"
Merge pull request #202 from eVoLuTiVeMEDIA/master

Fixed some "interferences" between fixed and user shortcuts.
Merge branch 'master' of https://github.com/pencil2d/pencil
Merge branch 'master' into feature/object-save-loader
Merge pull request #8 from pencil2d/master

update my branch
Introducing zipped file format

Now Pencil is able to read and write in both file formats - the old simple and the new zipped.
QuaZip library is included in Pencil source only in neccessery funtcionality area.
This Pencil version is checked only on Linux.
So far don't know if it works on other OSes.