Changed shebang back to python.

In modern linux distributions, executable "python" is a symlink to the
selected Python interpreter. There could be multiple versions installed
on the system, and appropriate tools on certain distributions exists for
selecting default one. There is no need for changing it to explicitly
"python3" executable.

README.rst

@@ -57,7 +57,7 @@ file.
 Rquirements
 ===========
 
-* Python 2.7
+* Python 2.7 or Python 3.6 or higher
 * Vice installation (c1541 program in path)
 
 Installation
@@ -87,6 +87,9 @@ script behaviour:
 Changelog
 =========
 
+* **3.2** Changed shebang to ``python`` executable instead of ``python3``
+* **3.1** Argparse on Python3 have different behaviour, where if no subcommand
+  is provided, it will pass anyway. Fixed.
 * **3.0** Added beta quality Python3 support
 * **2.8** Treat non standard discs a bit better
 * **2.7** Added support for gzipped disk images

uc1541

@@ -3,8 +3,8 @@
 UC1541 Virtual filesystem
 
 Author: Roman 'gryf' Dobosz <gryf73@gmail.com>
-Date: 2018-02-13
+Date: 2019-09-15
-Version: 3.0
+Version: 3.2
 Licence: BSD
 source: https://bitbucket.org/gryf/uc1541
 mirror: https://github.com/gryf/uc1541
@@ -489,7 +489,9 @@ CALL_MAP = {'list': lambda a: Uc1541(a.arch).list(),
 def parse_args():
     """Use ArgumentParser to check for script arguments and execute."""
     parser = ArgumentParser()
-    subparsers = parser.add_subparsers(help='supported commands')
+    subparsers = parser.add_subparsers(help='supported commands',
+                                       dest='subcommand')
+    subparsers.required = True
     parser_list = subparsers.add_parser('list', help="List contents of D64 "
                                         "image")
     parser_copyin = subparsers.add_parser('copyin', help="Copy file into D64 "