Added comments. Removed unneeded methods.
renamed pairUp() to the more popular fetchPairs() name. Left old one in
as an alias
Removed completed and rejected TODOs. AMysql_Statement obj now escaped
by using ->getSql().
Changed the way to connect. It is now optional and can be configured...

via an array as well.
Inherently use isMysqli
Lazy connect
Changed tabs to spaces. Trying to use psr-2 with method names.