url -> key
possibility to pass cache backend instance instead name
cleanups
clarify usage of key_mapping
response.history is tuple in Requests 1.x.x
fix instance check in CachedSession (str -> basestring)
move storage implementations to package
has_url() and delete_url() methods
fix thread_safety test
update Requests's required version
missed package in setup.py, bump version
Add monkey-patch test
fix monkey-patching
Rename configure to install_cache and add session_factory parameter
uninstall_cache()
additional tests for monkey-patching