Merge pull request #47 from HughePaul/master

Allow plain text expressions in where(), and() and or()
version bump
allow any arbitrary properties to be set on columns
version bump
Fix subQuery when used as a binary right
Merge pull request #48 from caseywebdev/join

Fix subQuery when used as a binary right
make delete take where clause directly
allow group to accept array of columns
cleanup trailing whitespace
allow order clause to accept array of columns
remove copy/pasta looking code
add tests for 'returning' and make it accept array of columns
allow shortcut where clauses in 'and' and 'or'
cleanup where node
make generated node constructors slightly less weird
allow select to take array of columns
use sliced for argument slicing
cleanup node inheritance
Merge pull request #49 from brianc/object-literals

Object literals
version bump