Log Message:
net/ncgopher: update to 0.3.0

-parsing MIME type from gemini response instead of just checking for \ 
"text/".
 Other text types will now be displayed as text/plain, not text/gemini.
 This also allows the supposed encoding to be detected and ncgopher will now
 abort a request if the server signals an unsupported charset. A dialog will
 be displayed.

-Fixed bug in gopher protocol handling.