V3.3.7

This release has mostly enhancements to the HTTP access method, which were driven by using this for internal testing of SAS Viya. Support for more diagnostic messages and exception handling and better messages are in here. Also, the ability to disable prompting from saspy for cases where a script is running in the background and can't receive input; set prompt=False to get a failure instead of a hang if a prompt would be necessary. Also a tweak to the symget outtype= parameter do it will accept 'int' or 'float' (strings) to mean int (1) or float (1.0) types while continuing to take objects of the types.