Change flog threshold
Remove TODO; in practice, we use GitHub Issues instead
Remove devtools as a development dependency

Devtools are not currently compatible with Ruby 1.8.7, which this
library will support until version 1.0.0 is released. See disucssion at
https://github.com/rom-rb/devtools/pull/47.
Remove guard configuration
Fix specs on Ruby 1.8.7
Run specs on Ruby 1.8.7 and JRuby in 1.8-mode
Add back yardstick for documentation coverage
Add back RuboCop
Add back Reek
Merge pull request #13 from sferik/remove_devtools

Remove devtools
Update travis configuration to match memoizable's more closely
Fix rubocop to exclude vendor path
Remove passing ruby versions from travis allowed failures
Add json as a gem dependency for ruby 1.9.2

* This is required for rubocop to work on 1.9.2
Change #hash method to use Array#hash which has better uniformity
Refactor block to use a Method object