Dynamically update Changelog.md base on commits since last tag.

changelog.sh

#!/bin/bash
LASTDATE=$(git show -s --format=%ad `git rev-list --tags --max-count=1`)
echo $1 > VERSION
touch CHANGELOG.tmp
echo `date +"*$1* (%Y-%m-%d)"` >> CHANGELOG.tmp
COMMITS=`git log --pretty=format:"  - %s (%h);" --since="$LASTDATE"`
index=0
IFS=';'
for line in $COMMITS; do
  read -r -p "$line [y/N] " response
  if [[ $response =~ ^([yY][eE][sS]|[yY])$ ]]
  then
    SAVED[$index]=$line
  fi
  ((index++))
done
echo ${SAVED[@]} >> CHANGELOG.tmp
echo "" >> CHANGELOG.tmp
cat CHANGELOG.md >> CHANGELOG.tmp
mv CHANGELOG.tmp CHANGELOG.md