Pacparser

What's Changed
* Pin Travis Max OS X version by manugarg in https://github.com/manugarg/pacparser/pull/94
* Update makefile so clean uses $(PYTHON) variable by kitterma in https://github.com/manugarg/pacparser/pull/100
* Fix build on MacOS 11.1 by mitchblank in https://github.com/manugarg/pacparser/pull/104
* Make compilation work on 64-bit Windows 10. by manugarg in https://github.com/manugarg/pacparser/pull/116
* Add a workaround for the distutils bug. by manugarg in https://github.com/manugarg/pacparser/pull/117
* Fix very minor Makefile issue in spidermonkey `clean` target (109) by mzpqnxow in https://github.com/manugarg/pacparser/pull/110
* fix typo in INSTALL by t13801206 in https://github.com/manugarg/pacparser/pull/105
* build: Don't quote $(MAKE) by orbea in https://github.com/manugarg/pacparser/pull/106
* Embed libpacparser in pactester itself. by manugarg in https://github.com/manugarg/pacparser/pull/119

New Contributors
* manugarg made their first contribution in https://github.com/manugarg/pacparser/pull/94
* kitterma made their first contribution in https://github.com/manugarg/pacparser/pull/100
* mitchblank made their first contribution in https://github.com/manugarg/pacparser/pull/104
* mzpqnxow made their first contribution in https://github.com/manugarg/pacparser/pull/110
* t13801206 made their first contribution in https://github.com/manugarg/pacparser/pull/105
* orbea made their first contribution in https://github.com/manugarg/pacparser/pull/106

**Full Changelog**: https://github.com/manugarg/pacparser/compare/1.3.7...v1.3.8

Mostly bug fixes.

IPv6 extensions are more native now:
- Added support for isInNetEx and FindProxyForURLEx functions. 26
- Non *Ex functions don't return IPv4 address now. 25
- Enable IPv6 extensions by default. enable_microsoft_extensions doesn't do anything now and is deprecated.

Python module change:
- Errors raise an exception now instead of just printing the error. 44
- Added ability to build python module for multiple python versions (2 and 3).

A few of bug fixes:
- URL-encode the "url" for single quotes before creating JavsScript using it. 38
- Don't ship deprecated.3 in docs. This is too general a name. 34
- Don't build static library. It's not packaged in any distribution and should not be used anyway. Fixes 30.
- Set LD_LIBRARY_PATH properly in tests. 31

This release has been rolled into release 1.3.5.

- Bug fix: Fix a memory leak in pacparser_find_proxy(). ([Issue 22](../../issues/22))
- Enhancement: Use PACPARSER_DEBUG environment variable rather than just 'DEBUG' to specify verbose logging. ([Issue 23](../../issues/23))
- Enhancement: Improve error handling. Allow applications to control error reporting. ([Issue 24](../../issues/24))
- Enhancement: Make pacparser python module compile on Python 3 as well. ([Issue 21](../../issues/21))