release notes for 0.6.5
into (object, rdd) robust to extra kwargs
Check string types
Generic _name property is None for unnamed expressions

eg, Map
Clean up _name test
Merge pull request #4 from cpcloud/mrocklin-method-dispatch

Fix errors
correct errors in docs around table->expr move
replace TableSymbol with Symbol in docstrings
Merge pull request #688 from mrocklin/method-dispatch

Refactor Expr
Use unicode and do not check for eval_str attr
Nested query and better repr
Add tests for nested mongo
Declare that we have a property to be looked up on the class as a method