Needs proguard entry

[slowcar]

Parsing ics files fails in a release build, but succeeds in a debug build.
Adding
-keep class biweekly** {*;}
in proguard-rules.pro
fixed the issue.
I suggest to add the proguard rule(s) to the library.

[mangstadt]

How would you suggest doing this?

See also: #98

[slowcar]

Ah sorry, i did not see the existing issues.
https://developer.android.com/studio/projects/android-library
section "A library module might include its own ProGuard configuration file"