Fix README
Add tests to make sure time with zone won't be changed after save
update tests for time with zone
Test search data using time with zone
Remove unused Scanner type from dialect
Support custom types from base types
Fix exception in mysql
Add DB.Tx() method to provice access to the underlying sql.Tx instance.
Add DB.CommonDB() instead of DB.Tx(), as discussed in the PR thread.
Merge pull request #77 from tstranex/master

Add DB.Tx() method to provide access to the underlying sql.Tx instance.
Merge branch 'upstream' into tmp-27103