Make Postgres point type correspond to ruby array with two floats inside
Move away from column.sql_type in untested code too
Merge pull request #7324 from MSch/pg-geometric

Add support for pg geometric datatypes point and box
move mailer testing examples into the testing guide.

Closes #9325.

I adjusted the example and the description in the testing guide and
simply linked from the mailer to the testing guide. This way we don't
have to maintain two separate places.
Merge pull request #9920 from senny/clean_up_testing_examples_for_action_mailer

move mailer testing examples into the testing guide.
use relative links inside guides [ci skip]
The sql_type method called here is from
ActiveRecord::ConnectionAdapters::Column

See
https://github.com/rails/rails/blob/28b8ca766e3e7c6c43d3ae900c99f8377153c62/activerecord/lib/active_record/connection_adapters/column.rb#L16
Merge pull request #9925 from senny/relative_guide_links

use relative links inside guides [ci skip]
Fix typo
Adds support for concurrent indexing in PostgreSQL adapter

Adds support for algorithm option in MySQL indexes
Moves USING and algorithm options upstream

The syntax is still specific to the Adapter, so the actual executed string happens
in the corresponding adapter