Breaking Change: Prerelease version increments

Prior to sbt-release 1.4.0, if a prerelease version (for example 1.0.0-RC1) is incremented, the prerelease part RC1 is dropped, so 1.0.0-RC1 was incremented to 1.0.0. By default, sbt-release 1.4.0 increments prerelease versions by default, if it ends in a number. In other words, 1.0.0-RC1 is incremented to 1.0.0-RC2.

To restore the previous behavior, you can set the following setting:

releaseVersionBump := sbtrelease.Version.Bump.NextStable

This was contributed by @Andrapyre in #397

Updates

• Update specs2-core to 4.20.4 by @scala-steward-bot in #399

Full Changelog: v1.3.0...v1.4.0