fix failing test cases

Author: alok1304

src/cluecode/copyrights.py

@@ -428,22 +428,18 @@ def get_tokens(numbered_lines, splitter=re.compile(r'[\t =;]+').split):
         for tok in splitter(line):
             # strip trailing quotes+comma
             if tok.endswith("',"):
-                tok = tok.rstrip("',")
-            
-            # remove leading plus sign
-            if tok.startswith('+'):
-                tok = tok.lstrip('+')
-
-            # convert 'AUTHOR:' to 'author:' or 'Author:'
-            if tok == 'AUTHOR:':
-                tok = 'author:'           
+                tok = tok.rstrip("',")          
 
             tok = (
                 tok
                 .strip("' ")  # strip leading and trailing single quotes, and spaces
                 .rstrip(':')  # strip trailing colons
                 .strip()
             )
+
+            # convert '+AUTHOR' to ('author' or 'Author')
+            if tok == '+AUTHOR':
+                tok = 'author' 
 
             # Split tokens like 'Author:Frankie.Chu' into 'Author' and 'Frankie.Chu'
             if tok.startswith("Author:"):