Merge pull request #22 from mirror3000/master

Overwrite warning when creating file
Merge pull request #24 from mirror3000/master

Qt 5 port + memory leak reduction
Merge pull request #25 from mirror3000/master

Execution flow save + Cyclic detection + a leak fixed
Merge pull request #26 from mirror3000/master

Execution restore
Merge pull request #27 from mirror3000/master

Compile with cmake
Merge pull request #28 from mirror3000/master

Fixed a segmentation fault
Fix diagramscene compilation error with VS Qt 5.1 SDK under Windows
Merge github.com:veaceslav/WHC-IDE

Conflicts:
	src/diagram/diagramscene.cpp