Restore files states (fixed #234)
Added margin to ImageViewer (#335)
Merge
Fixed merge
Moved addition to _savedEditorStates in _insertState()
Fixed #339: Added "open in a new tab" menu option
Merge remote-tracking branch 'upstream/master' into 339-open-in-new-tab-menu-option
nits
Merge pull request #343 from dinhviethoa/339-open-in-new-tab-menu-option

Added "open in new tab" menu option (fixed #339)
nits
Merge pull request #338 from dinhviethoa/234-restore-files-location

Restore files states (fixed #234).
Build version 0.0.17