Updated SQLAlchemy requirements
Merge pull request #462 from sammyshj/updaterequirements
Update hacking for proper rebase technique.
Required exceptions are now handled in database migration. Updated alembic version

Changed exceptions. Updated alembic version
Database migration to support private bookmarks

Exisitng bookmarks should be public

Added specific exception

Updated SQLAlchemy requirements

Tests added for private bookmark support

Fixed lint errors

Fixed another lint error

Added all tests
Merge pull request #461 from sammyshj/databasemigration

Exisitng bookmarks should be public
First bookmark should be public
Merge pull request #464 from sammyshj/firstbmark
Updated models count tests for private and non-private bookmarks

Added more tests

Modified model count tests

Fixed errors
Merge pull request #463 from sammyshj/modeltests

Models tests have been updated to take into account the private flag with private and non-private count tests.
Adding BaseConnection and TwitterConnection db migration and model