Sketching out interface for analysis
Implemented PPV statistics
Astropy tables, metadata checking
Revered accidential deletion of TreeIndex while rebasing
PP Catalog
PEP8 fixes
dendrogram __iter__ order is stable
analysis documentation. verbosity fix. analysis catalogs in main namespace
sky_rad -> sky_radius
name tweaks
astropy a dependency for analysis. PEP fixes
Positions reported in catalogs, with WCS world conversion
Merge pull request #22 from ChrisBeaumont/analysis

Basic analysis interface