Allow use of assert_template with the :file option.
This worked in Rails 3.2, but was a regression in 4.0.0.beta1
Move AP changelog entry to the top [ci skip]
Fix hash spaces and use 1.9 style hash [ci skip]
SQLite3 3.6.8+ supports savepoints

http://www.sqlite.org/lang_savepoint.html
https://github.com/rails/rails/blob/master/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb#L130-L132
Fix warnings