Use _binary prefix for bytes/bytearray parameters (now optional)

[vtermanis]

This should hopefully address the problems of the previous attempt (#106, #123). An optional connection parameter is used to enable the behaviour. I've also added a unit test to check expected query parameter handling.

[methane]

thanks

[jkrukoff]

Excited to see this merged, my logs have been full of the spurious "invalid utf8" mysql warning since I switched to storing binary UUIDs due to this.

Had to do some digging to find that this was underlying cause of sqlalchemy issue: https://bitbucket.org/zzzeek/sqlalchemy/issues/3804/invalid-utf8-character-string-warning-on

Doesn't look like will get any attention from that end, since maintainer isn't running mysql, so isn't seeing issue.

[pawl]

@methane do you plan to cut a release for this change soon?

[methane]

It seems Oracle start releasing MySQL Connector/C 6.1.9 with vs14 support.
https://dev.mysql.com/downloads/connector/c/

Currently, only win32 zip is upload.
Since I don't want to use MSI installer, I hope winx64 zip will be released soon.
This week is good timing to cut new release.

[methane]

I released mysqlclient 1.4.10 with Python 3.5 & 3.6 * 32bit & 64bit on Windows.
OTOH, Python 2.7 wheel is not built anymore. Oracle stopped shipping vc9 and vc10 libs.
It's time to drop Python 2.7 support on Windows.