Remove PEP8 warnings in persistent_vector.py
Remove pep8 warnings in atom.py
Merge pull request #142 from flsafe/fixup-warnings

Fixup warnings
fixed the bug with recur by removing fn-recur, it didn't JIT well anywas
Merge pull request #143 from pixie-lang/fix-recur-bug

fixed the bug with recur by removing fn-recur, it didn't JIT well anyways