Pytest-check

=========== short test summary info ===========
FAILED test_example_simple.py::test_fail - assert 1 == 2

Documentation Update

- README.md
- Turn help function list into a table with param lists
- Show an alternative method of creating a helper function using check.fail()
- examples
- change a few remaining import pytest_check as check examples
- to the recommended from pytest_check import check

Add `fail()` and `between_equal()`

Fix 155
Summaries from 2.2.3 are cool, but don't work with xdist
Turn off summaries while xdist is running
I hope I'm not seeing a pattern here

Fix 153 turn off summaries for pytest < 7.3

Summaries depend on internals of pytest, which changed in 7.3.
May be possible to back port, but the quickest fix is to turn them off for earlier pytest versions (7.0.0 - 7.2.2)

**Full Changelog**: https://github.com/okken/pytest-check/compare/2.2.2...2.2.3

Fix issue 133 : Failure message should show up in summary line