Bumps version to 0.8a1.
Splits WebProcessorSession._test_url_filter.

Adds _is_url_filtered and _filter_url.
Closes {Request,Response}.body.content_file created within Engine.
document_test.py: Adds non-HTML URLs.
Adds to_dict() to URLRecord, Response, URLInfo.
Implements --python-script for basic Python scripting hooks.
Adds missing files.
Reads Python script in binary mode.
Implements --lua-script for Lua scripting support. (chfoo/wpull#1)
Adds more script tests. Fixes adding urls from scripts.
Disables test for lua in Python 3.2.
readme.rst: Notes lunatic python not supported in Python 3.2.
Fixes Lua type issues under Python 2.
Fixes to_lua_type() in itertools.count for Python 2.6.
Bumps version to 0.8.

Merge branch 'develop'

Conflicts:
	wpull/version.py