This is a hotfix release for sbt 1.0.x series.

### Bug fixes

- Fixes undercompilation of value classes when the underlying type changes. [zinc#444][zinc444] by [@smarter][@smarter]
- Fixes `ArrayIndexOutOfBoundsException` on Ivy when running on Java 9. [ivy#27][ivy27] by [@xuwei-k][@xuwei-k]
- Fixes Java 9 warning by upgrading to launcher 1.0.2. [ivy#26][ivy26]/[launcher#45][launcher45] by [@dwijnand][@dwijnand]
- Fixes `run` outputting debug level logs. [#3655][3655]/[#3717][3717] by [@cunei][@cunei]
- Fixes performance regression caused by classpath hashing. [zinc#452][zinc452] by [@jvican][@jvican]
- Fixes performance regression of `testQuick`. [#3680][3680]/[#3720][3720] by [@OlegYch][@OlegYch]
- Disables Ivy log4j caller location calculation for performance regression reported in [#3711][3711]. [util#132][util132] by [@leonardehrenfried][@leonardehrenfried]
- Works around Scala compiler's `templateStats()` not being thread-safe. [#3743][3743] by [@cunei][@cunei]
- Fixes "Attempting to overwrite" error message. [lm#174][lm174] by [@dwijnand][@dwijnand]
- Fixes incorrect eviction warning message. [lm#179][lm179] by [@xuwei-k][@xuwei-k]
- Registers Ivy protocol only for `http:` and `https:` to be more plugin friendly. [lm183][lm183] by [@tpunder][@tpunder]

### Enhancement

- Adds Scala 2.13.0-M2 support. [zinc#453][zinc453] by [@eed3si9n][@eed3si9n] and [@jan0sch][@jan0sch]

### Internal

- Improves Zinc scripted testing. [zinc440][zinc#440] by [@jvican][@jvican]

  [@dwijnand]: https://github.com/dwijnand
  [@cunei]: https://github.com/cunei
  [@eed3si9n]: https://github.com/eed3si9n
  [@jvican]: https://github.com/jvican
  [@OlegYch]: https://github.com/OlegYch
  [@leonardehrenfried]: https://github.com/leonardehrenfried
  [@xuwei-k]: https://github.com/xuwei-k
  [@tpunder]: https://github.com/tpunder
  [@smarter]: https://github.com/smarter
  [@jan0sch]: https://github.com/jan0sch
  [3655]: https://github.com/sbt/sbt/issues/3655
  [3717]: https://github.com/sbt/sbt/pull/3717
  [ivy26]: https://github.com/sbt/ivy/pull/26
  [ivy27]: https://github.com/sbt/ivy/pull/27
  [launcher45]: https://github.com/sbt/launcher/pull/45
  [3680]: https://github.com/sbt/sbt/issues/3680
  [3720]: https://github.com/sbt/sbt/pull/3720
  [3743]: https://github.com/sbt/sbt/pull/3743
  [3711]: https://github.com/sbt/sbt/issues/3711
  [util132]: https://github.com/sbt/util/pull/132
  [lm174]: https://github.com/sbt/librarymanagement/pull/174
  [lm179]: https://github.com/sbt/librarymanagement/pull/179
  [lm183]: https://github.com/sbt/librarymanagement/pull/183
  [zinc452]: https://github.com/sbt/zinc/pull/452
  [zinc444]: https://github.com/sbt/zinc/pull/444
  [zinc453]: https://github.com/sbt/zinc/pull/453
  [zinc440]: https://github.com/sbt/zinc/pull/440
