Window __getattr__ method infinite recursion bug fix (issue #69)
Minor change
Version 0.4.29
Window __getattr__ method unexpected behavior (issue #69)
Version 0.4.30

This version fixes a bug which caused infinite recursion in Window
object symbols dynamic binding. The issue is described at

https://github.com/buffer/thug/pull/69

Really thanks to Joseph-CHC for pointing it out.
Minor fixes in HTTP requests' headers handling
MAEC tool_id bug fix

Credits: Jose Nazario <jose@monkey.org>
PyV8 patch
Merge remote-tracking branch 'upstream/master'