Clarify shut down order in ExUnit, closes #15236

Add "mix source MODULE" to print or open a given module/function location (#15234)

Support types and callbacks in mix help

Add source/1 to IEx

Improve docs for start_link on supervisor and genserver, closes #15232

Remove test with race condition (already covered in warnings_test.exs)

Do not call fsync in lock implementation (#15229)

Correct mention to after_compile/2 in changelog (#15224)

Bump actions/download-artifact from 8.0.0 to 8.0.1 (#15214)

Bump actions/attest-sbom from 4.0.0 to 4.1.0 (#15213)

Bump azure/login from 2.3.0 to 3.0.0 (#15212)

Bump erlef/setup-beam from 1.20.4 to 1.23.0 (#15211)

Release v1.20.0-rc.4

Keep warnings on map/remote dispatch with/without parens

Allow test names longer than 255 characters