[Checkins] [zopefoundation/zope.tales] c990bc: Improve `PathExpr` reusability; allow customizable...

[Dieter Maurer]

  Branch: refs/heads/path_expr_with_configurable_builtins
  Home:   https://github.com/zopefoundation/zope.tales
  Commit: c990bcfbc302ad6b13dfe4bd30c6a2a8394186a8
      https://github.com/zopefoundation/zope.tales/commit/c990bcfbc302ad6b13dfe4bd30c6a2a8394186a8
  Author: dieter <dieter at handshake.de>
  Date:   2020-07-05 (Sun, 05 Jul 2020)

  Changed paths:
    M CHANGES.rst
    M src/zope/tales/expressions.py
    M src/zope/tales/tests/test_expressions.py

  Log Message:
  -----------
  Improve `PathExpr` reusability; allow customizable use of builtins in path expressions