Automate cache resets
Automate cache resets

The idea is simple: store a version in the cache; if, upon the next load, the (major) version is too old, the cache is discarded. The currently used version values (0.0) do not discard the cache; but the next commit will bump the (major) version.

Fxrh/libqmatrixclient,QMatrixClient/libqmatrixclient,QMatrixClient/libqmatrixclient