Fix test cases for inflector.rb
`yield` was missing in #with_dup, due to which 57 assertions were not running
in real, and all tests were passing by default.
Error was introduced in commit - 31ceb5e.
simple solution that brings rake stats task to every kind of rails project
Remove duplicated to_s method call.
remove unused variable warning
`warning: assigned but unused variable - album`
Fix docs for ActionController::Renderers.add
Merge pull request #15328 from kuldeepaggarwal/remove-warnings

remove unused variable warning.
Merge pull request #15324 from andriytyurnikov/simple_rake_stats_for_everything

simple solution that brings rake stats task to all rails project
Merge pull request #15316 from akshay-vishnoi/test-cases

Fix test cases for inflector.rb
Merge pull request #15325 from tgxworld/no_need_to_call_to_s

Remove duplicated to_s method call.
pg, remove unused code. Use `extract_schema_and_table` instead.
pg, add missing `:nodoc:` to adapter.
Add an interface for type objects to control Ruby => SQL

Adds the ability to save custom types, which type cast to non-primitive
ruby objects.
Merge pull request #15307 from sgrif/sg-type-cast-for-write

Add an interface for type objects to control Ruby => SQL
Replace double quotes with single quotes while adding an entry into Gemfile