Interface change:  - Subquery initialization methods no longer return a URL.  Instead,    they call the set_url method.  They can also call the set_parser    method if they want to specify a parser object for use in parsing    the subquery result.  - The _init_phase method no longer calls generate_parser.
Interface change:
 - Subquery initialization methods no longer return a URL.  Instead,
   they call the set_url method.  They can also call the set_parser
   method if they want to specify a parser object for use in parsing
   the subquery result.
 - The _init_phase method no longer calls generate_parser.

EarthLifeConsortium/earthlife_API,EarthLifeConsortium/earthlife_API,EarthLifeConsortium/earthlife_API