Tcl/Tk 9.0.0 (Sep 26, 2024)

* Highlights of Tcl 9.0:
- 64-bit Capacity: Data values larger than 2Gb
- Unicode and Encodings: full codepoint range, added encodings, encoding
  profiles to govern I/O, and more.
- Zip Filesystems: mount zipfiles as filesystems
- Attached Archives: enable starkit-style deployment of apps, with support
  data in filesystem archives attached to executable or libraries. Build tclsh and
  wish this way.
- New Notifiers: The central event handling engine in Tcl is now constructed
  on top of the system calls epoll or kqueue when they are available. The select
  based implementation also remains for platforms where they are not.
- Many new commands and features

* Important Incompatibilities in Tcl 9.0:
- Namespace varname resolution: Current namespace, not global.
- I/O malencoding: now raises error by default.
- Tilde (~) in pathnames: no longer interpreted as home directory.
- tcl_precision no longer has effect on number formatting


* Highlights of Tk 9.0:
- Access to OS facilities: notifications, print, and tray systems
- Scalable Vector Graphics: partial support in images, extensive use to enable
  scalable widget and theme appearances.
- Images: full access to metadata and alpha channel.
- Platform Features and Conventions: many improvements, including two-finger
  gesture support where available.

Reproducible: Always