deprecated; mpromise aliases
updated; driver to 1.3.8
website; fix example
tests; fixed timeouts
fixed; MongooseBuffer subtype loss during casting

We introduce a new MongooseBuffer schema option: `subtype`.
When specified, this type is used when saving the buffer, otherwise
the default (0x00) is used.
remove schemabuffer.subtype()
added; MongooseBuffer#subtype method

Allows specifying the subtype for use when converting
to Binary
tests; MongooseBuffer#subtype
docs; subtypes
tests; remove pointless test
updated; driver to 1.3.10