Merge pull request #60 from chchwy/master

Simplified ToolSetWidget
Merge pull request #64 from chchwy/master

Fix file saving issue
Improvement: interactive tool resizing

1. previous sizes are kept
2. works on all sizeable tools modes
3. added feather control [CTRL]+drag
#5 FIXED ISSUE

Layer checking (for imports) is now corrected.
Fixed black screening (from feather adjustments)
Merge pull request #65 from eVoLuTiVeMEDIA/master

Improvements and some fixes
Merge branch 'master' of https://github.com/pencil2d/pencil