[Checkins] [zopefoundation/RestrictedPython] 6c602c: readd some of the documentation that helps to unde...

[Alexander Loechel]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/RestrictedPython
  Commit: 6c602c90cf8658cf1aaea660543228f127f6bbfd
      https://github.com/zopefoundation/RestrictedPython/commit/6c602c90cf8658cf1aaea660543228f127f6bbfd
  Author: Alexander Loechel <loechel at users.noreply.github.com>
  Date:   2019-09-09 (Mon, 09 Sep 2019)

  Changed paths:
    A docs/contributing/ast/python2_6.ast
    A docs/contributing/ast/python2_7.ast
    A docs/contributing/ast/python3_0.ast
    A docs/contributing/ast/python3_1.ast
    A docs/contributing/ast/python3_2.ast
    A docs/contributing/ast/python3_3.ast
    A docs/contributing/ast/python3_4.ast
    A docs/contributing/ast/python3_5.ast
    A docs/contributing/ast/python3_6.ast
    A docs/contributing/ast/python3_7.ast
    A docs/contributing/ast/python3_8.ast
    A docs/contributing/changes_from26to27.rst
    A docs/contributing/changes_from30to31.rst
    A docs/contributing/changes_from31to32.rst
    A docs/contributing/changes_from32to33.rst
    A docs/contributing/changes_from33to34.rst
    A docs/contributing/changes_from34to35.rst
    A docs/contributing/changes_from35to36.rst
    A docs/contributing/changes_from36to37.rst
    A docs/contributing/changes_from37to38.rst
    M docs/contributing/index.rst

  Log Message:
  -----------
  readd some of the documentation that helps to understand how RestrictedPython works internally (#177)

* readd some of the documentation that helps to understand how RestrictedPython works internally, and the AST Grammars for comparision

* formating and diff for ast files