Release v3.3.0

• 2b03a2c Release v3.3.0
• 33ec3ed improve ci workflow
• a862494 update ci workflow to fetch with history to collect changes
• ba99f63 update ci workflow to automatically create release packages with description
• c5c2f8d upgrade node to latest lts; upgrade dependencies
• c1a4a53 update readme
• b319ff8 remove unused svg loader
• 35471fa add no-cache options to index.html
• bbb4b04 improve nunjucks plugin