Shell handles all possible relx app formats
Shell handles all possible relx app formats

The list of applications in the relx config section could contain
tuples. The tuple will either contain a version constraint for the app,
the start type of the app or both.

This fix silently expands `{shell_apps, [Apps]}` to support the same
format.

lrascao/rebar3,benoitc/rebar3,tsloughter/rebar3,saleyn/rebar3,rebar/rebar3,vladdu/rebar3,ferd/rebar3,rebar/rebar3,fauxsoup/rebar3,fauxsoup/rebar3,norton/rebar3,benoitc/rebar3,djnym/rebar3,erlang/rebar3