check that cassette contains things before returning
add back the secure write
add pytestdebug to .gitignore
add requests class to sow the seeds of a custom matcher
hold counts in a Counter
update tox to reflect new text directory structure
add backported counter module
update cassette unit tests
add a couple more tests, change played api to require request being played
update vcr stubs to actually call mark_played correctly
remove extra whitespace
add str to cassette object
update readme
bump revision number since I broke backwards compat