Eliminate "should" from specs
Use explicit time format in db:dump_dir Rake task

The format of Time#to_s varies by Ruby version.
Refactor Rake tasks into a module
Add specs for Rake tasks
Merge pull request #70 from dnrce/rake-specs

Add specs for Rake tasks
Add a changelog

Closes #71

[ci skip]
Move everything under the YamlDb namespace
Remove internal namespace usage
Remove init.rb

Was used for Rails 2.x-style plugin loading.
No longer needed for use as a gem.
Merge pull request #73 from dnrce/namespace

Move everything under the YamlDb namespace
Add namespace changes to changelog
CI test against Rails 4.2 stable
Hold i18n back for older Rubies