Update documentation, changelog and other files [skip ci]

Author: juanpedromoreno

CHANGELOG.md

@@ -1,5 +1,13 @@
 # Changelog
 
+## [v0.6.5](https://github.com/scala-exercises/sbt-exercise/tree/v0.6.5) (2020-08-10)
+
+[Full Changelog](https://github.com/scala-exercises/sbt-exercise/compare/v0.6.4...v0.6.5)
+
+📈 **Dependency updates**
+
+- Bumps sbt up [\#17](https://github.com/scala-exercises/sbt-exercise/pull/17) ([juanpedromoreno](https://github.com/juanpedromoreno))
+
 ## [v0.6.4](https://github.com/scala-exercises/sbt-exercise/tree/v0.6.4) (2020-08-10)
 
 [Full Changelog](https://github.com/scala-exercises/sbt-exercise/compare/v0.6.3...v0.6.4)

compiler/src/main/scala/org/scalaexercises/exercises/compiler/CompilerSettings.scala

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2020 47 Degrees Open Source <https://www.47deg.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.scalaexercises.exercises.compiler
 
 object CompilerSettings {