add missing includes and missing windows-specific headers to tarball

fix missing header in test_fast_extension.cpp

crc32 big endian fixes

merged RC_1_2 into RC_2_0

Update FUNDING.yml

fix makefile to include the correct http_proxy.py test proxy

add back ssl test to makefile

fix typo in building documentation

fix one more float->int conversion warning

fix parsing of enum classes in doc generation tool