- Bumping curl dependency to 7.19.4.
- No longer need to unset some curl functions when reusing handles.
- Adding support for HTTP/2
- Removing no longer utilized effective URI / transfer stats. Might add
this in later as a new type of request option or as part of "debug".
- Instead of using a HeaderValues object for header values, I've added an
optional argument to getHeader() that specifies whether or not to return
a header as a string or an array.
- Adding the start of the new documentation.