* adjust the order of rich text rendering ([7458a9f](https://github.com/Hufe921/canvas-editor/commit/7458a9fd2036819a5646d7cf5563f03d1e7ce48b))
* cannot deletable elements boundary error #491 ([291ea26](https://github.com/Hufe921/canvas-editor/commit/291ea26b06c39b6649dbc6fff2fdb75748756556)), closes [#491](https://github.com/Hufe921/canvas-editor/issues/491)
* control front and back operation boundary error ([1bb7a58](https://github.com/Hufe921/canvas-editor/commit/1bb7a58f5eaee8d09fadecbd1ee8717dd2763086))
* move between table cells using up and down keys #465 ([2de1ba7](https://github.com/Hufe921/canvas-editor/commit/2de1ba7b62cc04307abeaec78b61516db41a71aa)), closes [#465](https://github.com/Hufe921/canvas-editor/issues/465)