show full config path

allow config values to be surrounded by doublequot

- Use HTTPS for communication

- Move away from the deprecated authToken authentication.
- **NOTE**: This requires you to change your configuration. **Your
Last.fm password now needs to be set as plaintext**, not an MD5 hash (as
before).

merge curl error code/string output

bump version to 0.4.1

prepare for release 0.4.0

bump version

bugfix release

tag code as 0.3.0

mpdas 0.3.0 now supports the 2.0 protocol specs from last.fm
the next release is to use libmpdclient instead of libmpd (due to deprecation of libmpd)
and supposed to feature a major code cleanup

tag to 0.2.5