Remove six.u(...), six.b(...)

Not needed since dropped older python versions

- Fix py2/py3 range/zip behavior
  - Ensure same functions being used
- Fix Exception/System.Exception name clashes

test_exceptions: Add exc_info test & fix Exception nameclash

Fix max min nameclash

- Replace type(()) with tuple to clarify intent

Can mess with test discovery

Closes pythonnet#329

Checks whether an error occurred and in case it has throws a
PythonException.

In particular in Py.Import.

Closes pythonnet#347

*.cs linelength 120
Allman

Runtime.cs section headers got changed to docs.

Closes pythonnet#350

Test for pythonnet#420

Can't start at dev1 as bumpversion breaks if we add a minimum start version for dev.

Ensure that new binaries are generated for releases which are usually not from pull_requests.

Using APPVEYOR_REPO_TAG_NAME because yields shorter syntax
because it's undefined (ie false) when not a tag
and APPVEYOR_REPO_TAG has to be compared to lowercase `true` instead
of `True` like everything else.

Definitions:
APPVEYOR_REPO_TAG_NAME - contains tag name for builds started by tag; otherwise this variable is undefined;
APPVEYOR_REPO_TAG - true if build has started by pushed tag; otherwise false;

https://www.appveyor.com/docs/environment-variables/

* Fix numpy array and README example

Generic Lists were falling through and being classified as `typecode.Object`
To solve this, adding a specific processing branch for `Generic Lists` only
to avoid breaking the changes from 471673a

Closes pythonnet#249

* Update syntax

* Update AUTHORS.md

* Update CHANGELOG.md

* Update setup.py

* Update bld.bat

* Support clr.GetClrType() - as in IronPython

Implements pythonnet#432

* Tests for clr.GetClrType()

* clr.GetClrType test: ensure bad type raises ArgumentException

* clr.GetClrType - added xml doc comment, updated AUTHORS.md and CHANGELOG.md

* Simplified implementation of clr.GetClrType (taken from IronPython)

Closes pythonnet#448

* Fixing setup.py with mono 5.0

* Go back to xbuild

* Trying to figure out the error cause. Apparently xbuild cannot process the Copy section of the pdb file in the projects.

I have commented them out for now, but this is not a real soltion since they are needed in debug versions. Just to se if it fixes the CI.

…thonnet#461)

* Added python "with" construction

* Added some unit tests for new With method

* Renamed With tests for easier grouping

* Support for named arguments to invoke python methods

* Named argument tests cosmetic changed

* Fixed failing test in python 2.7

* Reset line endings in csproj to LF