Merge pull request #24 from atomsos/master

Update units.py, decode file ignore not utf8 errros

Author: ZedThree

fortdepend/units.py

@@ -46,8 +46,8 @@ def __init__(
         self.depends_on = None
 
         if readfile:
-            with smart_open(self.filename, "r") as f:
-                contents = f.read()
+            with smart_open(self.filename, "r", encoding="utf-8") as f:
+                contents = f.read().lower()
 
             preprocessor = FortranPreprocessor()