Jac/parse publish options (#236)

* implement thumbnail options. (including 'not yet implemented' message for --thumbnail-group)
* Implement overwrite/append/replace arguments (including not-yet-implemented message for --replace)
* clarified help content for extract-encryption and some other not-implemented options
* added tests for all valid publish command options
* error log cleanup: better stacktrace, less repetition

Author: jacalata

tabcmd/commands/datasources_and_workbooks/publish_command.py

@@ -74,6 +74,7 @@ def run_command(args):
 
             new_workbook = TSC.WorkbookItem(project_id, name=args.name, show_tabs=args.tabbed)
             try:
+                print(creds)
                 new_workbook = server.workbooks.publish(
                     new_workbook,
                     args.filename,