Fixes to date parsing and reading of null fields
Look for a pushed_at value in server message batches
Send pushed_at times as ISO dates
Migration to separate columns for task flags
Introduce a property flag to indicate if an integer represents a boolean, use it to use the correct types when communicating flags to/from server
Better JSONObject logging, fixed bug with pushed_at values when 0
Read server time for writing pushed_at values, send client time when syncing
Sync logging flag
Don't show tags with null titles, fixed pushed_at dates for tables
Record creation dates after all
Improvements to createLink helper methods
Added a deleteLink method for tasks to tags
Added a deleteLinks method for deleting multiple task to tag links
Implement tags_removed in MakeChanges
Refactored some things in TagService to use UUIDs
Support tag added and tag removed in make changes
Added tag name change after save hook
Fixes to make changes throwing NPE when no values set
Fixed a compiler error in new sync unit tests
Started migrating metadata to use task_uuid instead of local task id. Need to finish migration and remove all references to Metadata.TASK