Perscache

What's Changed
* Improve `FileStorage()` protocol by leshchenko1979 in https://github.com/leshchenko1979/perscache/pull/17
* Fix GoogleCloudStorage errors


**Full Changelog**: https://github.com/leshchenko1979/perscache/compare/0.6.0...0.6.1

What's Changed
* Add logging and some fixes by leshchenko1979 in https://github.com/leshchenko1979/perscache/pull/16


**Full Changelog**: https://github.com/leshchenko1979/perscache/compare/0.5.1...0.6.0

Fix hashing errors

**Full Changelog**: https://github.com/leshchenko1979/perscache/compare/0.5.0...0.5.1

What's Changed
* `ignore` understands both positional and keyword arguments by leshchenko1979 in https://github.com/leshchenko1979/perscache/pull/12
* Implement Google Cloud Storage by leshchenko1979 in https://github.com/leshchenko1979/perscache/pull/15


**Full Changelog**: https://github.com/leshchenko1979/perscache/compare/0.4.1...0.5.0

What's Changed
* Check parameter integrity by leshchenko1979 in https://github.com/leshchenko1979/perscache/pull/11


**Full Changelog**: https://github.com/leshchenko1979/perscache/compare/0.4.0...0.4.1

What's Changed
* Add a serializer factory by leshchenko1979 in https://github.com/leshchenko1979/perscache/pull/9
* Simplify decorator calls by leshchenko1979 in https://github.com/leshchenko1979/perscache/pull/10


**Full Changelog**: https://github.com/leshchenko1979/perscache/compare/0.3.0...0.4.0