fix rspec-rails version for now

2.13.1 is broken, 2.13.0 works.
release 2.4.1
master is tracking 2.4.2 release now
make cached colums actually return the cached value

previously it wouuld still do a database call every time
fixes #231
Refactored all_tag_counts to avoid scope if it already knows the id.
Went back to sub selects
Merge pull request #359 from zquestz/master

Refactored to go back to sub selects
fix bug with unprepared statements to sql in Rails 4
Test against ruby2.0 in travis-ci
fix a spelling error in spec_helper
Merge pull request #367 from rsl/master

Fixed bug with Rails 4 and association#to_sql
Merge pull request #383 from ktdreyer/spec-helper-spelling

fix a spelling error in spec_helper
Add Code Climate badge to repo README

Add Code Climate badge to repo README
Merge pull request #421 from mrb/master

Add Code Climate badge to repo README
Remove 1.8, 1.9.2 support, per README
Rails needs to be loaded to meet all gem dependencies
No need to monkey with load path in gem, add to tests
Use ActiveSupport hooks to lazy-extend/include rails classes
Only ActiveSupport actually required, not Rails gem
Update test schema.rb to match current migration

However, set force: true and didn't set indices

Fixes test failures for postgresql::

No integer type has byte size 11. Use a numeric with precision 0
instead.

https://travis-ci.org/mbleigh/acts-as-taggable-on/jobs/15196579

see https://github.com/rails/rails/issues/6272