Crash in release mode with proground

[mahbub-java]

After minifyEnabled=true for proground in build release mode app crash in fragment or activity where I use it.
Simply need -keep class ca.antonious.*.* { *; } in proground-rules.pro to avoid minify and it works now.
My setup: minSdkVersion 21, targetSdkVersion 29

This need to add in documentation. It take 2 hour from me to find out.

[gantonious]

Could you provide the library version you're using and a crash stack trace?

[mahbub-java]

library version I am using, ca.antonious:materialdaypicker:0.7.3