Merge branch 'master' into grammar

Author: bplommer

.appveyor.yml

@@ -7,6 +7,11 @@ assignees: ''
 
 ---
 
+## Compiler version
+
+If you're not sure what version you're using, run `print scalaVersion` from sbt
+(if you're running scalac manually, use `scalac -version` instead).
+
 ## Minimized code
 
 ```Scala

.github/ISSUE_TEMPLATE/bug.md

@@ -7,6 +7,11 @@ assignees: ''
 
 ---
 
+## Compiler version
+
+If you're not sure what version you're using, run `print scalaVersion` from sbt
+(if you're running scalac manually, use `scalac -version` instead).
+
 ## Minimized code
 
 ```Scala

.github/ISSUE_TEMPLATE/crash.md

@@ -4,9 +4,13 @@ about: Report an issue about the Dotty Compiler (not bug or crash)
 title: ''
 labels:
 assignees: ''
-
 ---
 
+## Compiler version
+
+If you're not sure what version you're using, run `print scalaVersion` from sbt
+(if you're running scalac manually, use `scalac -version` instead).
+
 ## Minimized example
 
 ```Scala