0.2.1:	+ OpenPGP Discovery Implemented - By SetHandler-ing
/HTTP_OPENPGP_DISCOVERY to mao_Discovery, a client can tell if the
server supports HTTP+OpenPGP. This will be enhanced soon, keep tuned!
	+ Skeleton for ImportKey handler ready. Will be used by clients
that support the OpenPGP Discovery method, like Enigform. I need to choose a
key_import mechanism, because gpgme does not implement key import from
keyserver.
	+ New Apache config command: OpenPGPKeyServer, to specify which
keyserver to use. Will be used by ImportKey handler (mao_importkey).
	* This changes added to README.

0.2.0-r1: Oops. Added "Apache License" statements in README and .c file.
0.2.0: New headers: X-Auth-OpenPGP-Fingerprint, X-Auth-OpenPGP-Email,
X-Auth-OpenPGP-Name, X-Auth-OpenPGP-Comment

0.1.0: Initial Stable Release. Can be enabled for specific virtual hosts
using the OpenPGPEngine configuration command. Can be used along mod_access.

0.0.0-alpha2: POST (with and without FILE inputs) are supported. nothing
              else.

0.0.0-alpha1: initial release. works server-wide. only GET supported
