Put version info in its own file.

- Added variables VN and VD

execution.py

@@ -4,6 +4,7 @@
 import random
 import re
 
+import version
 import tokens
 import operators as ops
 import parsing
@@ -561,6 +562,8 @@ def WIPEGLOBALS(self):
             "CZ": Scalar("bcdfghjklmnpqrstvwxyz"),
             "PA": Scalar("".join(chr(i) for i in range(32, 127))),
             "PI": Scalar(math.pi),
+            "VD": Scalar(version.COMMIT_DATE),
+            "VN": Scalar(version.VERSION),
             "VW": Scalar("aeiou"),
             "VY": Scalar("aeiouy"),
             "XA": Pattern("[A-Za-z]"),

pip.py

@@ -4,19 +4,19 @@
 import argparse
 import pprint
 
+import version
 from scanning import scan, addSpaces
 from parsing import parse
 from ptypes import Scalar
 from execution import ProgramState
 from errors import FatalError
 
-VERSION = "0.21.09.14"
 
 def pip(code=None, argv=None, interactive=True):
     if code is not None or argv is not None:
         interactive = False
     if interactive:
-        print(f"=== Welcome to Pip, version {VERSION} ===")
+        print(f"=== Welcome to Pip, version {version.VERSION} ===")
         print("Enter command-line args, terminated by newline (-h for help):")
         argv = input()
     if argv is not None:
@@ -131,7 +131,7 @@ def pip(code=None, argv=None, interactive=True):
     #!print(options)
 
     if options.version:
-        print(f"Pip {VERSION}")
+        print(f"Pip {version.VERSION} (updated {version.COMMIT_DATE})")
         return
     if options.debug:
         options.warnings = options.verbose = options.repr = True

version.py

@@ -0,0 +1,3 @@
+
+VERSION = "1.0.0"
+COMMIT_DATE = "2021-09-14"