Bump version to v0.16.0-rc1 (marktext#1645)

* Fix allowed paragraph transformations

* Fix wrong condition

* Add Windows spell checker and fixes (marktext#1624)

* Add Windows spell checker and fixes

* Fix build failure on macOS

* Fix preference visibility

* Bump version to v0.16.0-rc1

* Update Electron

Fix portable directory path

remove unnecessary attrs (marktext#1241)

Update Third Party Notices (marktext#1219)

fix: marktext#1191 and remove hover status (marktext#1197)

Release 0.15.0 (marktext#1185)

* prelease 0.15.0-rc.1

* degrade vscode-ripgrep to 1.3.1

release v0.14.0 (marktext#930)

feat: add front menu (marktext#875)

* feat: add front menu

* update changelog

* feat: add short cut of paragraph edit

* fix location bug of submenu

* update checkbox style in editor

* update selected background color

* update KEYBINDINGS.md

* Bullet to ordered list issue:

* emit change event after control paragraph

* fix: marked parse error

* disable table, front-matter and horizontal line in paragraph turn into, and fixed paragraph turn into html and math

* fix unwanted space before text paragraph when heading turn into text paragraph

* fix error when turn heading to paragraph

* put front menu on the left on front icon

* update readme

* if the selection span in two lnes, disable paragraph turn into heading

style: optimization

release version 0.13.53