feature request: invalidate cache if database file changes

[sbromberger]

Thank you very much for this utility - it's made a huge difference in my workflow.

I have a favor to ask: I love the caching feature but it's tripped me up a few times when I make changes to the database from another device. Would it be possible to have ph detect that the database has changed and then invalidate the cache? I understand that this would require reauthentication but it would ensure that we're getting the latest data.

[Evidlo]

That should already be handled here: https://github.com/libkeepass/pykeepass_cache/blob/master/pykeepass_cache/pykeepass_cache.py#L41-L42

I just tested it though and I'm seeing the same behavior as you're seeing.