v1.4.0

v1.4.0

v1.3.0

Merge pull request actions#27 from actions/test-more-version-combinat…

…ions

Add older and newer Elixir/OTP versions

Merge pull request actions#15 from ericmj/patch-2

Fix install-hex / install-rebar

Merge pull request actions#12 from actions/install-in-tmp

Install Elixir/OTP in /tmp

Update version in README

Update action.yml