roll an 0.3.0 release

[SethTisue]

needed over at scala/community-build#849

[SethTisue]

tagged, release notes attached: https://github.com/scala/scala-collection-compat/releases/tag/v0.2.2

[SethTisue]

Travis publishing run: https://travis-ci.org/scala/scala-collection-compat/builds/490341153

[SethTisue]

the new JDK 11 jobs failed but that's fine, we want to publish from 8. e71dc97 should fix it for next time

[SethTisue]

the 6 staging repos on oss.sonatype.org are orgscala-lang-1664 through orgscala-lang-1669. I hit "close" and "release" on them

• artifacts should eventually appear here:
  • https://repo1.maven.org/maven2/org/scala-lang/modules/scala-collection-compat_2.13.0-M5/0.2.2/
• note to self: I should update the version in the readme

[SethTisue]

gah, 2.11 artifacts aren't on Maven Central: https://repo1.maven.org/maven2/org/scala-lang/modules/scala-collection-compat_2.11/0.2.2/

[SethTisue]

haha well no wonder, wtf

  exclude:
    # ?                                                                                                                
    - jdk: oraclejdk8
      scala: 2.11.12

[SethTisue]

I'm rolling 0.3.0. no code changes, but I want to verify that the full cross-publish goes smoothly, and @julienrf pointed out that although we aren't guaranteeing bincompat yet (that's #162), 0.2.2 wasn't bincompat with 0.2.1. seems better to bump the version number to 0.3.0 to give more indication that bincompat broke.

[SethTisue]

gah, what a mess. I fixed the JDK 11 jobs to be green, green is good, but those jobs are also uploading artifacts to the staging repos, which we don't want. 😖

[SethTisue]

steps:

• delete tag and staging repos from previous attempt
• tag it, include release notes: https://github.com/scala/scala-collection-compat/releases/tag/v0.3.0
• wait for Travis to publish https://travis-ci.org/scala/scala-collection-compat/builds/490724127
• close and release staging repos
• wait for artifacts to show up:
  • https://repo1.maven.org/maven2/org/scala-lang/modules/scala-collection-compat_2.11/0.3.0/
  • https://repo1.maven.org/maven2/org/scala-lang/modules/scala-collection-compat_2.12/0.3.0/
  • https://repo1.maven.org/maven2/org/scala-lang/modules/scala-collection-compat_2.13.0-M5/0.3.0/
• submit downstream upgrade PRs (and be sure CI likes them)
  • use scala-collection-compat 0.3.0 across crossbuild scalikejdbc/scalikejdbc#984
  • scala-collection-compat upgrade kxbmap/configs#36