increment versions

increment.sh

function next_release_version() {
  local current_version="${1}"
  local first_part
  first_part=$(echo "${current_version}" | sed -e 's/^\(.*\)\([[:digit:]]\+\)[^\.]*$/\1/g')
  local last_digit
  last_digit=$(echo "${current_version}" | sed -e 's/^\(.*\)\([[:digit:]]\+\)[^\.]*$/\2/g')
  echo "${first_part}$((last_digit+1))"
}

function next_snapshot_version() {
  echo "$(next_release_version "${1}")-SNAPSHOT"
}