Drop Java 8

[mkurz]

No description provided.

[mkurz]

This and the below tastyFiles / bspReporter hack allows us to finally upgrade to latest sbt version

[mkurz]

Needed to fix (because of sbt upgrade)

References to undefined settings:
Omnidoc / javadoc / tastyFiles from Omnidoc / javadoc ((sbt.Defaults.docTaskSettings) Defaults.scala:2123)
Omnidoc / compile / bspReporter from Omnidoc / javadoc ((sbt.Defaults.docTaskSettings) Defaults.scala:2123)
Omnidoc / scaladoc / tastyFiles from Omnidoc / scaladoc ((sbt.Defaults.docTaskSettings) Defaults.scala:2123)
Omnidoc / compile / bspReporter from Omnidoc / scaladoc ((sbt.Defaults.docTaskSettings) Defaults.scala:2123)

Actually these two settings does not really matter in this context IMHO, bsp is for build server protocol and tastyFiles for Scala 3, but even if we use Scala 3 here, it should not really matter as well. I keep the comment here in case someone stumples over it and thinks this should be changed.

[mkurz]

Switching to sbt-ci-release/sbt-dynver

[mkurz]

So, I am going to merge this. It was a bit a pita to figure everything out.
However, what I did to make sure that everyhing works correctly:

• publishLocal from the main branch (with this pull request applied)
• publishLocal from the 2.8.16 tag

and then compare both jar files in the ~/.ivy2/local/com.typesafe.play/play-omnidoc_2.13/ folder.
Bot where the same size (15MB) and contain almost the same files (the docs), (only difference was that in main we upgraded some libraries already, so of course there where a bit textual changes).

For me this confirms this is working correctly.

[mkurz]

So another proof this worked correctly:
After merging this pull request there was a snapshot published:
https://oss.sonatype.org/content/repositories/snapshots/com/typesafe/play/play-omnidoc_2.13/2.8.2+109-92f9d044-SNAPSHOT/
You can compare that with the currenct 2.8.16 artifacts: https://repo1.maven.org/maven2/com/typesafe/play/play-omnidoc_2.13/2.8.16/
You see both main jars almost the same, if you extract them, you will see the docs inside basically are the same (like I said just main uses new versions so therea re subtle differences)