Add requirements for Rubinius. [admin]
Improve travis ci config. [admin]
Improve travis ci config. [admin]
String#rotate
fixed minor stuff
Merge pull request #89 from cielavenir/enumerable_squeeze

Add Enumerable#squeeze.
Polish #squeeze methods. [minor]
Convert HISTORY from RDoc to Markdown. [doc]
Merge pull request #93 from cielavenir/enumerable_squeeze

Fix Array#squeeze doc. [doc]
Merge pull request #91 from cielavenir/string_rotate

Add String#rotate.
Fix typo in require in squeeze.rb
Merge pull request #98 from rosenfeld/patch-1

Fix typo in require in squeeze.rb.
pull request to fix issue #99
Merge pull request #100 from RobertDober/master

Add rake and simplecov to Gemfile. [admin]
Adjustment to squeeze. [tweak]
Update to CONTRIBUTE. [doc]
Minor adjustments to various API docs. [doc]
Expand essentials.rb.
Unindent FileTest#safe code. [tweak]
Kernel#deep_copy does not depend on deep_clone.