Set version to 0.20.0-M1

Viktor Lövgren · Viktor Lövgren · commit 0ccd44a9c5a2 · 2019-07-04T12:43:52.000+01:00
diff --git a/version.sbt b/version.sbt
@@ -1 +1 @@
-version in ThisBuild := "0.20.0-M1-SNAPSHOT"
+version in ThisBuild := "0.20.0-M1"

Original file line number	Diff line number	Diff line change
`@@ -1 +1 @@`
`1`		`-version in ThisBuild := "0.20.0-M1-SNAPSHOT"`
	`1`	`+version in ThisBuild := "0.20.0-M1"`