The following cases are now tested and fixed so they don't crash: * Providing a "]" without there being a mfm token opened. * Opening a tag without closing. E.g. "$[spin " and "$[spin chocolatine". * Starting a tag without finishing it. E.g. "$[sp".
We can now handle multiple tokens and nesting.
We can handle all needed tokens. We still need to test for multiple tokens and for nesting.
