Tcl/Tk 9.1 released

A brand new Tcl/Tk release, in the form of Tcl/Tk 9.1. The new features in Tcl are a bit difficult for me to properly parse as a non-developer, but Tk's improvements are easy to understand: it brings supports for screen readers, initial supports for bidirectional and RTL scripts, improved listbox selection colours, and more. It also happens to drop support for Windows XP appearances, if that's something that matters to you.