Merge pull request #260 from scala-steward/update/sbt-scalajs-1.0.0

Update sbt-scalajs, scalajs-compiler to 1.0.0

Author: Philippus

.travis.yml

@@ -12,7 +12,7 @@ scala:
 env:
   - ADOPTOPENJDK=8     SCALAJS_VERSION=
   - ADOPTOPENJDK=8     SCALAJS_VERSION=0.6.32
-  - ADOPTOPENJDK=8     SCALAJS_VERSION=1.0.0-M8
+  - ADOPTOPENJDK=8     SCALAJS_VERSION=1.0.0
   - ADOPTOPENJDK=11    SCALAJS_VERSION=
 
 matrix: