Merge pull request #103 from alexstaubo/master

ANSI SQL2003 window functions
Patch Informix Visitor so that it includes joins
Fix egregious lack of code formatting there.
Merge pull request #109 from goodmorninginterwebs/master

Fix a little formatting error in README
Merge pull request #106 from jhollinger/informix_joins

Patch Informix Visitor so that it includes joins
Adds visit_Arel_Nodes_InfixOperation to Arel::Visitors::DepthFirst
Merge pull request #112 from benedikt/master

Adds visit_Arel_Nodes_InfixOperation to Arel::Visitors::DepthFirst
Remove deprecated Relation module
Merge pull request #113 from xuanxu/remove_relation

Remove deprecated Relation module
Revert "Merge pull request #113 from xuanxu/remove_relation"

This reverts commit 9978fc40a8a5a262670279129a335845ad647f48, reversing
changes made to b45466757424b98e1fe9699042d23550fd5b8751.
Revert "Revert "Merge pull request #113 from xuanxu/remove_relation""

This reverts commit 6e8d1587091e00a84ea24ab92d9e836c3c38bcb8.
Update travis.yml to use the proper rbx build names
Merge pull request #114 from benmoss/master

Update travis.yml to use the right Rubinius versions
Update manifest
Merge pull request #120 from rafaelfranca/master

Update manifest
Include Predications in Grouping

Also, removed unused ordering.rb file, since it is identical
to the one being created in unary.rb already, and isn't
required anywhere.
Merge pull request #121 from ernie/predications-on-grouping

Include Predications in Grouping
Update manifest.
Do not generate NOT IN (NULL) when empty right
Fix in [] to be false, in [] to be true

This is in response to discussion on 62207fa