Merge pull request #176 from bhattigurjot/master

live preview for arc entity
Solves the issue of crashing on closing
Merge pull request #177 from CharuChopra84/master

Solves the issue of crashing on closing
Implemented Save
Merge pull request #178 from CharuChopra84/master

Implemented Save
corrects bounding rect of ellipse
corrects angle of ellipse for open, save and script
Merge pull request #179 from kamalpreetgrewal/master

corrects bounding rect of ellipse
disables grid in print and print preview
implements cut/copy paste for image entity
correction in disabling grid in print/print preview
Merge pull request #180 from kamalpreetgrewal/master

disables grid in print and print preview
Solves the issues for shortcuts not working for all documents
Merge pull request #182 from ChanKaur/chan

Solves the issues for shortcuts not working for all documents