Extracting data namespace, renaming typeconv to conv namespace

[hairyhenderson]

This is a pretty huge change, but is mostly shuffling around existing functions into new namespaces.

Changes:

• New conv namespace, containing:
  • conv.Bool (aliased bool)
  • conv.Slice (aliased slice)
  • conv.Join (aliased join)
  • conv.Has (aliased has)
  • conv.URL (aliased urlParse)
  • conv.ParseInt (new)
  • conv.ParseFloat (new)
  • conv.ParseUint (new)
  • conv.Atoi (new)
• New data namespace, containing:
  • data.JSON (aliased json)
  • data.JSONArray (aliased jsonArray)
  • data.YAML (aliased yaml)
  • data.YAMLArray (aliased yamlArray)
  • data.TOML (aliased toml)
  • data.CSV (aliased csv)
  • data.CSVByRow (aliased csvByRow)
  • data.CSVByColumn (aliased csvByColumn)
  • data.ToCSV (aliased toCSV)
  • data.ToJSON (aliased toJSON)
  • data.ToJSONPretty (aliased toJSONPretty)
  • data.ToYAML (aliased toYAML)
  • data.ToTOML (aliased toTOML)
• Also the datasource, ds, datasourceExists and include functions are moved out of main into the data package, but can't (yet?) be aliased under data.

Signed-off-by: Dave Henderson dhenderson@gmail.com