Remove space from human size formatting.

gprMax/utilities.py

@@ -123,7 +123,7 @@ def human_size(size, a_kilobyte_is_1024_bytes=True):
     for suffix in suffixes[multiple]:
         size /= multiple
         if size < multiple:
-            return '{0:.1f} {1}'.format(size, suffix)
+            return '{0:.1f}{1}'.format(size, suffix)
 
     raise ValueError('Number is too large.')