[Checkins] [zopefoundation/RestrictedPython] 600ab4: Review documentation:

[Michael Howitz]

  Branch: refs/heads/issue-118
  Home:   https://github.com/zopefoundation/RestrictedPython
  Commit: 600ab45c8aebb131544ec1442e6538016f4be188
      https://github.com/zopefoundation/RestrictedPython/commit/600ab45c8aebb131544ec1442e6538016f4be188
  Author: Michael Howitz <mh at gocept.com>
  Date:   2019-05-08 (Wed, 08 May 2019)

  Changed paths:
    M README.rst
    R docs/RestrictedPython3/index.rst
    R docs/RestrictedPython4/index.rst
    R docs/api/index.rst
    R docs/basics/index.rst
    R docs/call.txt
    M docs/conf.py
    R docs/dep.txt
    M docs/idea.rst
    M docs/index.rst
    R docs/notes.rst
    R docs/old_README.rst
    M docs/roadmap/index.rst
    R docs/upgrade/ast/python2_6.ast
    R docs/upgrade/ast/python2_7.ast
    R docs/upgrade/ast/python3_0.ast
    R docs/upgrade/ast/python3_1.ast
    R docs/upgrade/ast/python3_2.ast
    R docs/upgrade/ast/python3_3.ast
    R docs/upgrade/ast/python3_4.ast
    R docs/upgrade/ast/python3_5.ast
    R docs/upgrade/ast/python3_6.ast
    R docs/upgrade/index.rst
    M docs/upgrade_dependencies/index.rst
    M docs/usage/api.rst
    M docs/usage/basic_usage.rst
    M docs/usage/framework_usage.rst
    M docs/usage/index.rst
    M docs/usage/policy.rst

  Log Message:
  -----------
  Review documentation:

* delete no longer needed parts
* move and fix the rest