Fixed empty note creation misbehavior when created from inside a tag
Crash when pressing delete key on empty first checklist item (fixed
library)
Parallelized all AsyncTask with executeOnExecutor for platforms >= 11
Implemented holderview pattern
Image fading transition is applied only if bitmap is not cached
Worked on may other performance improvements
Included app cache when "clear data" option is selected
During backup/restore process a selective cleanup of useless attachment
is done