ItemSync: Use correct context menu in items
ItemNotes: Use correct context menu in items
Simplify item loading and saving using plugins

ItemLoaderInterface methods canLoadItems() and canSaveItems() determine
if tab can be loaded and saved by a plugin. If method loadItems() or
saveItems() return false, the tab is disabled.
Remove some parentheses from about dialog
Handle renamed tab with other plugin if necessary
Don't refilter items if search expression stays empty
Uninitialize tab if it needs to be handled by other plugin
ItemSync: Set item icon in user specified order
Fix sizes for items
ItemFakeVim: Open external editor of child item
ItemNotes: Open external editor of child item
ItemSync: Open external editor of child item
Implement new platform method for Windows
Fix compiler warning for release
Pass quoted native file path to external editor
v2.0.0
Changelog updated
Smarter default item resizing
Remove TODO.txt.

No longer needed, TODOs are tracked in the PR at hluk/CopyQ#131.
Added dynamic toolbar and fix icon colors in shortcut configuration