add float <-> xsd:double conversion in literals (Richard Dale)
add float <-> xsd:double conversion in literals (Richard Dale)

net7/ActiveRDF,net7/ActiveRDF,mauriciobomfim/ActiveRDF,ActiveRDF/ActiveRDF,net7/ActiveRDF,ActiveRDF/ActiveRDF,ActiveRDF/ActiveRDF,net7/ActiveRDF,mauriciobomfim/ActiveRDF,mauriciobomfim/ActiveRDF