fcache rewrite for version 0.4
Merge branch 'release/v0.4' into develop
Makes appdirs required for installation.
Adds appdirs support.
Adds appdirs to documentation.
Adds appdirs support. Fixes #13.
Merge branch 'feature/appdirs' into develop
Bumps version.
Adds v.0.4.1 to changelog.
Release version 0.4.1
Merge branch 'release/v0.4.1'