Jackson 2.12 dropping Scala 2.10 support: what to do with `jackson-bom` version dep?

[Tatu Saloranta]

As some of you may know, support for Scala 2.10 is finally being
dropped from Scala module, for Jackson 2.12:

https://github.com/FasterXML/jackson-module-scala/issues/480

One practical question, then, is what to do regarding the version
management section of `jackson-bom`, for `jackson-module-scala_2.10`.
Leaving entry as is would lead to a dangling reference, referencing
non-existing 2.12.0 version, which seems wrong.

Two obvious choices would be:

1. Drop the entry altogether, define no version
2. Define latest available version (2.11.3 currently)

I am not quite sure which I prefer: I might go with (2) if it was any
other module -- since use of previous minor version generally works
for "leaf" modules (ones that depend on core, but that nothing else
depends on) -- but would probably not work very well for Scala module
as it uses strict check to ensure that core module versions used have
same minor version as Scala module. So databind 2.12.0 and Scala
module 2.11.x would fail on registration of Scala module.

So I guess I am leaning towards (1), removing the version management entry.

Any thoughts on this?

-+ Tatu +-