Prune old TclTk versions from VTK
VTK currently ships the following TclTk versions:
- 8.2
- 8.3
- 8.4
- 8.5
- 8.6
Can we trim this down to just 8.6? What support do we lose for doing so?
VTK currently ships the following TclTk versions:
Can we trim this down to just 8.6? What support do we lose for doing so?