Allow using only and without together fix #50
Test on Ruby 2.0 release version

The README states the Moped is tested on Ruby 2.0, but it isn’t 
actually (at least not on CI, though ruby-head is—but with failures
allowed). This remedies that.
Merge pull request #68 from amarshall/patch-1

Test on Ruby 2.0
Migrate .rvmrc to ruby-version file
Update to ruby 2.0.0
Remove rvmrc, add ruby-version and ruby-gemset
Update dependencies
Add failing spec for #77
Expand arrays. Fixes #77
Expand complex values in arrays.

[ close #80 ]
[ fix #77 ]
Add failing spec for #76
Expand nested values when expanding hash. Fixes #76
Update changelog
Update changelog
Add failing spec for #75
Added to_s method to Key
Expand complex values when merging criterions using __multi__ strategy. Fixes #75
Fix failing spec for #78
Fix require on active_support_time_with_zone

This case happens when ActiveSupport is present and cherry-picked.

Signed-off-by: chatgris <jboyer@af83.com>
Update changelog, close #62
Update travis config