Add a 'changes.sh' script to generate a CHANGES.txt which helps in the Release Notes.

Author: carlosame

.gitignore

@@ -19,3 +19,5 @@
 # Gradle
 **/.gradle
 **/build/
+
+/CHANGES.txt

changes.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+#
+# This script writes the changelog in a human-readable format.
+#
+# You'll probably want to edit manually the result of executing the script.
+#
+if [[ $# -eq 0 ]] ; then
+	echo "No version supplied (e.g. '4.0.0')"
+	exit 1
+fi
+OLDTAG=`git tag -l --merged master --sort=-taggerdate|head -1`
+echo "Writing changes from tag $OLDTAG"
+TITLE="XML-DTD CHANGES"
+VERHDR="Version ${1}"
+OUTFILE="CHANGES.txt"
+echo -en "${TITLE}\\r\\n${TITLE//?/=}\\r\\n\\r\\n${VERHDR}\\r\\n${VERHDR//?/-}\\r\\n\\r\\n">${OUTFILE}
+git log --reverse --pretty=format:%s ${OLDTAG}..|sed -e 's/^/- /'|fold -s|sed -r 's/^([^-])/  \1/'|sed -e 's/$/\r/'>>${OUTFILE}
+echo -en "\\n">>${OUTFILE}