add script bump_fastjson2_version:

usage:

$ bump_fastjson2_version 2.0.2-SNAPSHOT

scripts/bump_fastjson2_version

@@ -0,0 +1,69 @@
+#!/bin/bash
+set -eEuo pipefail
+
+################################################################################
+# util functions
+################################################################################
+
+# NOTE: $'foo' is the escape sequence syntax of bash
+readonly ec=$'\033'      # escape char
+readonly eend=$'\033[0m' # escape end
+readonly nl=$'\n'        # new line
+
+colorEcho() {
+    local color=$1
+    shift
+
+    # if stdout is the console, turn on color output.
+    [ -t 1 ] && echo "${ec}[1;${color}m$*${eend}" || echo "$*"
+}
+
+redEcho() {
+    colorEcho 31 "$@"
+}
+
+yellowEcho() {
+    colorEcho 33 "$@"
+}
+
+blueEcho() {
+    colorEcho 36 "$@"
+}
+
+logAndRun() {
+    local simple_mode=false
+    [ "$1" = "-s" ] && {
+        simple_mode=true
+        shift
+    }
+
+    if $simple_mode; then
+        echo "Run under work directory $PWD : $*"
+        "$@"
+    else
+        blueEcho "Run under work directory $PWD :$nl$*"
+        time "$@"
+    fi
+}
+
+die() {
+    redEcho "Error: $*" 1>&2
+    exit 1
+}
+
+################################################################################
+# biz logic
+################################################################################
+
+# shellcheck disable=SC2154
+[ $# -ne 1 ] && die "need only 1 argument for version!$nl${nl}usage:$nl  $0 1.x.y"
+readonly bump_version="$1"
+
+# adjust current dir to project root dir
+cd "$(dirname "$(readlink -f "$0")")/.."
+
+# bump pom version
+./mvnw \
+    org.codehaus.mojo:versions-maven-plugin:2.10.0:set \
+    -DgenerateBackupPoms=false \
+    -DnewVersion="$bump_version"