* disable focus in readonly mode #326 ([f0823d7](https://github.com/Hufe921/canvas-editor/commit/f0823d7a6b5e975b60affeea5aae626e14162dc7)), closes [#326](https://github.com/Hufe921/canvas-editor/issues/326)
* scaling table and separator elements error #326 ([b3354ac](https://github.com/Hufe921/canvas-editor/commit/b3354ac35ff34031b3dcbeab293b69b7686afdf2)), closes [#326](https://github.com/Hufe921/canvas-editor/issues/326)
* unable to copy elements in control #347 ([6ca1919](https://github.com/Hufe921/canvas-editor/commit/6ca1919498328d3154865469943bde06deb5e465)), closes [#347](https://github.com/Hufe921/canvas-editor/issues/347)
* underline position of superscript and subscript elements is error #268 ([90efe10](https://github.com/Hufe921/canvas-editor/commit/90efe1020fa801c64849b68b15580aa3b505d1cf)), closes [#268](https://github.com/Hufe921/canvas-editor/issues/268)
### Chores
* upgrade cypress version ([ecd4ae9](https://github.com/Hufe921/canvas-editor/commit/ecd4ae9652a9e819bc2a02f2f735d5b5bde9bc71))
### Features
* add control disabled rule ([1455a2a](https://github.com/Hufe921/canvas-editor/commit/1455a2afb2949b7db10a3cfa30258e0f03bcbf31))
* add range and position context api ([8acce15](https://github.com/Hufe921/canvas-editor/commit/8acce15e767aa14a80dfe88e596986f3cba9ad63))
* add set active zone api ([6b30e3c](https://github.com/Hufe921/canvas-editor/commit/6b30e3ca9d48cb45cfe082b55dcf11c8287c36ee))
* limit the max cursor offsetHeight #348 ([2666bc4](https://github.com/Hufe921/canvas-editor/commit/2666bc43c3e6eca26f51e6317afcb2b02805dad4)), closes [#348](https://github.com/Hufe921/canvas-editor/issues/348)