Enable TCP Keepalives on TCP connections to MySQL. Add keepalivePeriod DSN
option, tests, and documentation.
changed binary date / datetime to string
no longer cache len(...)
Removed "keepalivePeriod" DSN option.  Added AUTHORS entry.
Merge pull request #194 from goodinc/master

Enable TCP Keepalives on TCP connections to MySQL
updated comments for second part of the password cipher
Merge pull request #197 from zhenjl/ciphercomment

updated comments for second part of the password cipher
Add Jian Zhen

#197
applied modulo and allocation optimizations, added test
Merge pull request #195 from arnehormann/faster-dateformat

changed binary date / datetime to string
fix wrong link to CONTRIBUTING.md

it led to CHANGELOG.md
ad failing test
made writeExecutePacket independent of number of arguments
increase number of arguments in test (forgot to raise this again)
removed deprecated comments, improved my own
incorporate Juliens suggestions and update the changelog
Merge pull request #210 from arnehormann/fix-many-cols

support prepared statements with more than 32 parameters
Don't try old auth method on closed conn
Merge pull request #214 from fkm3/open_panic

Don't try old auth method on closed conn
Add fkm3 to AUTHORS