Add CHANGELOG to package files

[patrickjaberg]

Add CHANGELOG to package files

[mtrudel]

I have a vague memory that there was a reason that test was included in the list of distributed files, but I can't recall what it is (nor does a git blame on mix.exs yield anything useful).

I'd be up for removing the files section entirely! Happy to take PRs for here and Thousand Island.

Thanks for the issue!

[aptinio]

I now see the CHANGELOG.md in https://diff.hex.pm/diff/bandit/1.1.1..1.1.2. Thanks!

However, priv/plts/* got inadvertently included in the package, which are relatively big files:

> du -ah deps/bandit/priv/plts
4.0K    deps/bandit/priv/plts/dialyzer.plt.hash
1.3M    deps/bandit/priv/plts/dialyxir_erlang-26.1.plt
1.7M    deps/bandit/priv/plts/dialyxir_erlang-26.1_elixir-1.15.6.plt
3.0M    deps/bandit/priv/plts/dialyzer.plt
5.9M    deps/bandit/priv/plts

[mtrudel]

Reopening to track the pit fix