Bugfix clear_cache and update documentation

What's Changed

• Bugfix clear cache by @bneijt in #2
• Update documentation by @bneijt in #3

Full Changelog: 0.1.0...0.1.1

Cache iter to disk

Add iter cache decorator which will cache an iterable to disk while traversing it, allowing for fast re-runs of the iterator without executing logic again.

Write only what you have written

• Vars files will only be written if they have changed
• Sources will throw if they do not exists

Unlink nothing is ok

0.0.5

Allow unlink of none without issues

"Let it go"-support

Added support to drop messages already read by source by adding unlink_to.

Head in a package

Updated to the latest of master, still a mind dump and now just branch head in a package.

Mind dump

Initial release and mind-dump of the approach.

Basic approach works, but reading from an open sink will result in issues because the head file is not properly checked on last.