Merge pull request #171 from Philippus/scala-2.12.7

Update scala to 2.12.7

Author: gourlaysama

Diff for: build.sbt

@@ -3,7 +3,7 @@ import sbtcrossproject.crossProject
 
 scalaVersionsByJvm in ThisBuild := {
   val v211 = "2.11.12"
-  val v212 = "2.12.6"
+  val v212 = "2.12.7"
   val v213 = "2.13.0-M5"
 
   val allFalse = List(v212 -> false, v213 -> false, v211 -> false)

Diff for: shared/src/main/scala/scala/util/parsing/combinator/Parsers.scala

@@ -14,7 +14,6 @@ import scala.collection.mutable.ListBuffer
 import scala.annotation.tailrec
 import scala.annotation.migration
 import scala.language.implicitConversions
-import scala.util.DynamicVariable
 
 // TODO: better error handling (labelling like parsec's <?>)