Quick images and Improvements

Release Notes 1.15.2

New

• Added support for embedding image path in Quick Entry.

Changes

• Updated Italian translation (thanks to @albanobattistella)
• Code cleanup

Bug Fixes

• Fixed issues with exported images including selection.
• Fixed issue with importing OPML files (thanks to Ygor Mutti).
• Fixed issue with undo/redo of Unicode characters.
• Fixed issues with exporting to Outliner format.