Support scala 2.12.13, replaced deprecated sbt syntax

[domizei385]

removed sbt 0.13.x support
PR #2 for scoverage/scalac-scoverage-plugin#305

[ckipp01]

A few comments on things that I don't believe we need. I'm also still a bit concerned about the _sjs stuff since I believe we are forcing 1.5.x when shouldn't it only be for 1.x.x?

[ckipp01]

Also to verify I also changed

sbt-scoverage/src/main/scala/scoverage/ScoverageSbtPlugin.scala

Line 100 in aaff04c

}.map(_.take(3)).map(sjsVersion => "_sjs" + sjsVersion)

to just take 1 to align with the compiler plugin and all seems to work as expected.

[domizei385]

+1 on the sjs Version format.
Just aligned the plugin with the new convention and running tests now.

[domizei385]

@ckipp01 So all thats left is a published scoverage and an updated version in here.

[ckipp01]

+1 on the sjs Version format.
Just aligned the plugin with the new convention and running tests now.

Perfect. I'll do a release of the compiler plugin here shortly and then we should be able to update the version here.

[ckipp01]

Thanks a ton on your help getting this across the finish line @domizei385. I've updated to the newly released version of scoverage and all seems to be passing. I'll go ahead and merge and kickstart a release.