QVGE 0.5.4

Changes in this release:

• added shortcuts for quick node resizing (Ctrl+Up, Ctrl+Down)

• added mini help panel (#15)

• added "restore zoom after fit" feature (#65)

• added nodes transformation mode (#24)

• auto scroll during drag implemented (#56)

• some labels drawing optimizations

• fixed crash after editing a node port

• fixed drawing direction arrows when nodes are too close

• fixed some edge drawing issues

• fixed crash on reading *.xgr files in 32-bit versions

• fixed regression on opening main window in maximized mode

• fixed issue of scaling of the recent files list on the start page