Release 2.4.1

[SethTisue]

Motivation:

• 2.4.0 didn't publish for 3.0.0-M2; see for Release 2.4.0 #413 for gory details

Steps:

• merge PRs
• choose version number
  • 2.4.1, no changes besides to the build/publish stuff
• create the release and write the notes
  • https://github.com/scala/scala-collection-compat/releases/tag/v2.4.1
• wait for release build
  • https://travis-ci.com/github/scala/scala-collection-compat/builds/215438308
• release the staging repos
  • https://oss.sonatype.org/#stagingRepositories
• artifacts on Maven Central
  • https://repo1.maven.org/maven2/org/scala-lang/modules/scala-collection-compat_3.0.0-M3/2.4.1/
  • https://repo1.maven.org/maven2/org/scala-lang/modules/scala-collection-compat_3.0.0-M2/2.4.1/
  • https://repo1.maven.org/maven2/org/scala-lang/modules/scala-collection-compat_2.13/2.4.1/
  • https://repo1.maven.org/maven2/org/scala-lang/modules/scala-collection-compat_2.12/2.4.1/
  • https://repo1.maven.org/maven2/org/scala-lang/modules/scala-collection-compat_2.11/2.4.1/
  • (not a complete list)
• post-release, bump version in README
  • 0f64bc2

[SethTisue]

all is well afaict