* replaced old status with 2 flags for unread and starred
* add fields to db, replace int(1,0) with booleans in sql queries, removed StatusFlags class + refactor code relying to it
* add repair step for migration
* again use integer(1,0) instead of bool in sql queries, because of sqlite doesn't support true/false
* add/fix unit tests for new boolean status
* set unread/starred flags as statements in sql
* fixed mysql unknown column items.unread, fixed marking of read items on repair step
* remove unnecessary bool casts
* add empty checks to Items::is* methods
* update migration to use native sql instead of the querybuilder
* don't cast the flags manually, let the api do the work
* Update picoFeed to v0.1.28
* Add updated_date to database and bump version to 10.1.1
* Add updatedDate to item model
* Check for updatedDate when updating a feed
* Fix unit test to check for newer updatedDate
* Update picoFeed to 0.1.25
* Add updated_date to database
* Add updatedDate to item model
* Bump version to 9.0.5
* Check for updatedDate when updating a feed
* Fix unit test to check for newer updatedDate
