Uncompyle6

=====================================

Again, most of the work in this is release is thanks to x0ret.

- Handle annotation arguments in Python 3.x
- Fix _vararg_ and function signatures in 3.x
- Some 3.x < 3.6 `while` (1)/`if` fixes &mdash; others remain
- Start reinstating `else if` -> `elif`
- `LOAD_CONST` -> `LOAD_CODE` where appropriate
- option `--weak-verify` is now `--syntax-verify`
- code cleanups, start using [black](https://github.com/python/black) to reformat text

================================

Most of the work in this is release is thanks to x0ret.

- Major work was done by x0ret to correct function signatures and include annotation types
- Handle Python 3.6 `STORE_ANNOTATION` [58](https://github.com/rocky/python-uncompyle6/issues/58)
- Friendlier assembly output
- `LOAD_CONST` replaced by `LOAD_STR` where appropriate to simplify parsing and improve clarity
- remove unneeded parenthesis in a generator expression when it is the single argument to the function [247](https://github.com/rocky/python-uncompyle6/issues/246)
- Bug in noting an async function [246](https://github.com/rocky/python-uncompyle6/issues/246)
- Handle Unicode docstrings and fix docstring bugs [241](https://github.com/rocky/python-uncompyle6/issues/241)
- Add short option -T as an alternate for --tree+
- Some grammar cleanup

================================

As before, decomplation bugs fixed. The focus has primarily been on
Python 3.7. But with this release, releases will be put on hold,as a
better control-flow detection is worked on . This has been needed for a
while, and is long overdue. It will probably also take a while to get
done as good as what we have now.

However this work will be done in a new project
[decompyle3](https://github.com/rocky/python-decompile3). In contrast
to _uncompyle6_ the code will be written assuming a modern Python 3,
e.g. 3.7. It is originally intended to decompile Python version 3.7
and greater.

* A number of Python 3.7+ chained comparisons were fixed
* Revise Python 3.6ish format string handling
* Go over operator precedence, e.g. for AST `IfExp`

Reported Bug Fixes
------------------

* [239: 3.7 handling of 4-level attribute import](https://github.com/rocky/python-uncompyle6/issues/239),
* [229: Inconsistent if block in python3.6](https://github.com/rocky/python-uncompyle6/issues/229),
* [227: Args not appearing in decompiled src when kwargs is specified explicitly (call_ex_kw)](https://github.com/rocky/python-uncompyle6/issues/227)

==============================

As before, lots of decomplation bugs fixed. The focus has primarily
been on Python 3.6. We can now parse the entire 3.6.8 Python library
and verify that without an error. The same is true for 3.5.8. A number
of the bugs fixed though are not contained to these versions. In fact
some span back as far as 2.x

But as before, many more remain in the 3.7 and 3.8 range which will
get addressed in future releases

Pypy 3.6 support was started. Pypy 3.x detection fixed (via `xdis`)

==========================

Lots of decomplation bugs, especially in the 3.x series fixed. Don't worry though, many more remain.

* Add annotation return values in 3.6+
* Fix 3.6+ lambda parameter handling decompilation
* Fix 3.7+ chained comparison decompilation
* split out semantic-action customization into more separate files
* Add 3.8 try/else
* Fix 2.7 generator decompilation
* Fix some parser failures fixes in 3.4+ using test_pyenvlib
* Add more run tests