"Relational Database Managements systems", not "Relational Database Managements System systems"
Merge pull request #191 from sadfuzzy/patch-1

"Relational DataBase Management systems",
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Remove columns usage from the README

Closes #189
Release 5.0.0
Remove deprecated calls from the tests
Remove joins method
Test on 2.1.0 preview
Documented the case-insensitive nature of the match feature.

Documenting the library's behavior. People and other libraries (cf. Squeel) have come to depend on this behavior, and so am submitting this pull request to specify it authoritatively.
Merge pull request #226 from dogweather/master

Documented the case-insensitive nature of the match feature.
Remove README inaccuracy, where does not allow multiple arguments
Merge pull request #229 from aackerman/readme-inaccuracy

Remove README inaccuracy, where does not allow multiple arguments
Test  against ruby 2.1 on travis.
Bump minitest to 5.1.
Assert that SelectManager#project accepts a raw String
Removed EngineProxy in SelectManager tests
Merge pull request #233 from aackerman/fix-select-manager-project-test

Assert that SelectManager#project accepts a raw String
Merge pull request #231 from vipulnsward/travis-2-1

Test  against ruby 2.1 on travis.
Merge pull request #234 from aackerman/remove-test-engine-proxy

Removed EngineProxy in SelectManager tests
Extract comparison array to a constant for the time being until removing the check completely.