Memoize v1.4.1

• New features:

  • Support Beamer modes.
  • Support externs typeset on landscape pages.
  • Implement salt and related keys (used by Beamer mode support).

• Minor changes:

  • Allow changing prefix in \mmznext (used by Beamer mode support).
  • To better support user interaction with foreign package support, any unknown /mmz keys issued in the preamble are retried at begindocument/end.

• Bugfixes:

  • Allow for (expandable) macros in reference keys advised by auto/ref.
  • Fix a regular expression in memoize-clean.py.

• Documentation:

  • Improve the troubleshooting sections (2.9, 3.1).
  • Update and rewrite installation instructions (INSTALL.md).
  • Fix some typos and formatting issues.

• Several under-the-hood changes and changes to the build system, including a cleaner way to compile the examples and documentation.