Mathkeyboardengine

Fixed

- An import error that some environments had (for example React with Vite and Typescript), was `Could not find a declaration file for module 'mathkeyboardengine'.`. Fixed by [rmathis](https://github.com/rmathis) in [#11](https://github.com/MathKeyboardEngine/MathKeyboardEngine/pull/11).

Added

- `parseLatex`. Developing this feature - parsing a LaTeX string for editing by MathKeyboardEngine - started after a [question thread](https://github.com/orgs/MathKeyboardEngine/discussions/1) was opened by [chengyi](https://github.com/WCY91).
- `insert` previously only accepted a single `TreeNode`, but it can now handle a `TreeNode[]` too.

Fixed

- Bug related to type checking: the [type declarations](https://www.typescriptlang.org/docs/handbook/2/type-declarations.html) of `getEditModeLatex` and `getViewModeLatex` were not copied into `dist/MathKeyboardEngine.d.ts` due to a bug in `declarationbundler.js` since version 0.2.3. Fixed by [boompikachu](https://github.com/boompikachu) in [#7](https://github.com/MathKeyboardEngine/MathKeyboardEngine/pull/7).

- Add `parse_latex`.
- Drop support for python 2.7, 3.6 and 3.7. (Now only 3.8 and up.)

- npm & jsDelivr: update readme.
- Deno: add [x.ts](https://github.com/MathKeyboardEngine/MathKeyboardEngine/blob/main/src/x.ts) for accessing everything from a single module.

- Fix only relevant if `LatexConfiguration`'s `activePlaceholderColor` and `passivePlaceholderColor` is used: use `{\color{my-color}x}` instead of `\color{my-color}{x}`.