Don't indent end-of-file marker (#60)

* Run inspect.cleandoc on source code for add_method

Author: palfrey

toltec/hooks/install_lib.py

@@ -5,6 +5,7 @@
 methods and add them to scripts if found.
 """
 
+import inspect
 import logging
 
 from typing import Set, Iterable
@@ -20,7 +21,7 @@
 def add_method(name: str, src: str, *depends: Iterable[str]) -> None:
     """Add a method to be automatically added to scripts that use it"""
     METHODS[name] = (
-        src,
+        inspect.cleandoc(src),
         depends,
     )