allow optional pretty-printing of JSON source data
switch to ArcGIS Query from Identify
refactor HTTP::get_json
get server to reproject coordinates
allow layer redefinition via dyanmic layer queries
remove features requiring layer redefinition
change nomenclature: 'definition' -> 'where'
use HTTP post in feature query to avoid long URLs
automatically escape in Hash#to_query
specified pagination overrides default
add option for local reprojection of feature data
add Map#reproject_from