Update rollup config

Change export types

Add rollup.config.ts into tsconfig.json

Update packages

Fix default options

Update README.md

Fix change event on multiple select

Add EventEmitter

Add interface export

Clarify element selector

Update README.md

Update index.html

Improve tree-shaking

Update Event API

Add getChecked, getUnchecked methods

Fix length method

Add inputValueAttribute option

Add addToForm test block

Change option addToForm default to false

Remove unused variable

Fix image checker

Merge pull request #1 from carry0987/Refactor

Convert main logic to TS

Convert reportInfo to TS

Convert utils-ext to TS

Update index.html

Update index.html

Update Utils

Update index.html