Python 3 support problem

[yoavram]

>>> import hamly
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/xxx/miniconda3/envs/Lobster/lib/python3.6/site-packages/hamly/__init__.py", line 3, in <module>
    from .loader import get_template
  File "/Users/xxx/miniconda3/envs/Lobster/lib/python3.6/site-packages/hamly/loader.py", line 40
    exec code in scope
            ^
SyntaxError: Missing parentheses in call to 'exec'