Added changelog. Extended release-perform script.

Author: dhendriks

CHANGES.md

@@ -0,0 +1,12 @@
+# Changelog for com.github.javabdd
+
+All notable changes to this project will be documented in this file.
+
+## [Unreleased]
+### Added CHANGES.md to track changes between releases.
+
+## [1.0.1] - 2020-03-17
+### Updated SCM URL for proper Maven Central metadata.
+
+## [1.0.0] - 2020-03-13
+### First release of com.github.javabdd.

release-perform

@@ -5,4 +5,6 @@ if [[ ! -f release.properties ]]; then
     exit 1
 fi
 mvn release:perform
-
+echo
+echo "Don't forgot push the changes and tags for this release."
+echo "After a successful release, execute e.g. 'git push' and 'git push --tags'."