Add railtie rescue_responses (Issue #492)
Need action_dispatch railtie for rescue_responses
Fix rescue responses for rails 3.0 and 3.1
Merge pull request #542 from leifcr/active_record_rescue_responses

Add active record rescue responses
More accurate match, "system.*" is a reserved collection namespace
Merge pull request #543 from banyan/more-accurate-reserved-name

More accurate match, "system.*" is a reserved collection namespace
Clarify that Rails 4 support is only in the beta, add example Gemfile entry for beta
Merge pull request #545 from KristineHines/patch-1

Clarify that Rails 4 support is only in the beta, add example Gemfile en...
Add rubysl for rubinius support
Add rbx to travis
Add transparent alias conversion during query/modifier usage
Remove RBX
Dealias :fields options as well
Add de-aliasing for ensure_index et al
Spec typo fix
Be more clear when specifying which version of JRuby mongo_mapper is tested against 

There is no version 1.9; this change should avoid confusion.
Merge pull request #552 from rthbound/patch-1

There is no JRuby version 1.9; this change should avoid confusion
Removes trailing whitespace and hard tabs
Merge pull request #555 from rthbound/removes_trailing_whitespace_and_hard_tabs

Removes trailing whitespace and hard tabs
Setting a key using send should return the new value

There seems to be an unnecessary line at the end of `internal_write_key`
that results in `send("#{key_name}=", value)` returning nil. This breaks
compatibility with 0.12.

The `@attributes` variable that is set to nil in the last line of
`internal_write_key` does not appear to be
referenced elsewhere.