bare bone version of irsa_dust as per new API
Added fix for get_image as class method
Made minor fixes as per discussion
Fix for making module vars class vars, added separate methods for section images
Changed an import
updated test suite partially
Changed _section_code so that it accepts "all" as a valid section
Added send_request a common function for posting all requests
Added some tests with monkey patching
Added parallel_map function
Changed exception statement in send_request
Cleaned up tests by parametrize
Added documentation to irsa_dust.core
Removed url as a parameter to query functions
Made args_to_payload private
Removed parallel_map for now
Changed QueryClass to BaseQuery
Merge branch 'master' of git://github.com/astropy/astroquery into irsa_dust
Removed class_or_instanceand exception code, importing the new merged one instead
Made tests more readable