added dev command and detailed contributing guide

remove .DS_Store

2.1.0

added standalone d.ts to package installation

reoder and group npm scripts

remove generated files from repo

refactor setNonce and tests

fix test/tsconfig for VSCode

Add Csp nonce support (#66)

omit unnecessary call expression

fix demo page

better types for populateClassList

omit unnecessary function wrapper

2.0.2

fix #61 item action cannot stop propagation