Daniel Isaksen authored Sep 22, 2017 and Natanael Copa committed Sep 25, 2017

I have updated the community/erlang package to version 20.0.5, and changed the
APKBUILD file to pull the source from github.com/erlang/otp instead of
erlang.com as they distribute "older" releases there.

Three applications were removed upstream (and subsequently here):
  - erlang-percept (concurrency profiling tool)
  - erlang-typer (type annotator)
  - erlang-gs (graphics system)