Syntax fixes.

gprMax/_version.py

@@ -1,4 +1,4 @@
 # This is where the version number is set and read by setup.py and conf.py (for the docs)
 
 __version__ = '3.2.0b0'
-codename = ''
+codename = 'Johns whisky choice!'

gprMax/gprMax.py

@@ -22,8 +22,8 @@ import logging
 from .config import create_simulation_config
 from .contexts import create_context
 
+logging.basicConfig(level=logging.INFO, format='%(message)s')
 
-logging.basicConfig(level=logging.INFO)
 
 def run(
     scenes=None,

gprMax/grid.py

@@ -24,6 +24,7 @@ from colorama import Fore
 from colorama import Style
 init()
 import numpy as np
+from scipy.constants import c
 
 import gprMax.config as config
 from .exceptions import GeneralError