register_dll and unregister_dll helpers
remove uncessary network access so that wapt-get can be used with cached data if possible
 wapt_repourl is now a read only calculated property for the Wapt class
force RawConfigparser for inifile
query_package_entry : include additional fields in calculated_attributes_list
helper functions WAPT.is_installed and WAPT.is_available for packages
Version class to compare 0.0.0 type of versioning

error helper function error() to raise an exception in setup.py