v0.1.1

• Single function returns air and water data; echoGetFacilities() and echoGetReports() wrap the individual functions to streamline functions that users need to be familiar with. (closes #33)
• Added echoWaterGetMeta() and echoAirGetMeta() functions to retrieve column metadata returned by echoWaterGetFacilityInfo() and echoAirGetFacilityInfo(); specify columns returned by respective functions by including qcolumns argument in respective functions. (closes #28).
• Added default qcolumns argument to echoWaterGetFacilityInfo() to ensure reasonable default columns are returned (#29).
• echoWaterGetFacilityInfo() properly returns large datasets. The new internal function getDownload() downloads the entire CSV of queried data as a dataframe (closes #27).
• Added default qcolumns argument to echoAirGetFacilityInfo() to ensure reasonable default columns are returned (#29).
• echoAirGetFacilityInfo() properly returns large datasets. The new internal function getDownload() downloads the entire CSV of queried data as a dataframe (closes #27).
• echoSDWGetSystems() downloads data for public drinking water systems.
• echoSDWGetMeta() downloads metadata for columns returned by echoSDWGetSystems()
• Unit tests for functions that rely on EPA ECHO API utilize skip_on_cran() instead of httptest::with_mock_API()
• Imported functions are called explicitly eg. pkg::fun()