Opening .html files will lead to errors.  AlphaTk's HTML mode hasn't yet been
updated for use with AlphaTk.  This will be fixed in the near future.

Tk 8.2.0 on Windows has a known balloon help bug, which will be fixed by Tk 8.2.1.

There is a known infinite loop when highlighting matching {}[] etc, caused by a bug
in Tk's text widget when a line contains a multi-byte character (such as a bullet).  
Hopefully fixed in upcoming Tk release.

One minor annoyance is that the Tk text widget has a buggy indentation
algorithm for lines which start with a mixture of tabs and spaces.
This will hopefully be fixed in the future.  Those familiar with Tk may
wish to examine the source code and fix the problem.  This problem only
arises with a tab-size other than 8 (for tabsize 8 Tk has a hard-coded,
correct indentation algorithm!).

