refactor: rework mime type comparison and clean code rest.py: accept application/* as match for application/json in non /binary_context rest path. allow defining default mime type to return when file/message is missing mime type. Make it a class variable to it can be changed from text/plain to text/markdown or whatever. extract code from determine_output_format() to create create_valid_content_types() method which returns a list of matching mime types for a given type/subtype. Eliminate mostly duplicate return statements by introducing a variable to specify valid mime types in error message. rest_common.py: Fix error messages that now return application/* as valid mime type. CHANGES.txt upgrading.txt rest.txt: top level notes and corrections. Also correct rst syntax on earlier change.

#!/usr/bin/env python

# Roundup requires Python 3.7+ as mentioned in doc\installation.txt
from __future__ import print_function
import sys

VERSION_NEEDED = (3, 7)

if sys.version_info < VERSION_NEEDED:
    print("Content-Type: text/plain\n")
    print("Roundup requires Python %s.%s or newer." % VERSION_NEEDED)
    sys.exit(0)