Use __future__.division for all Hy code
Fixes #106
Note: This is implemented by replacing all calls to Python's
builtin "compile" function by calls to hy.importer.compile_,
which adds the "future division" flag. Anyone using "compile"
in future work will have to remember this.
Add "from __future__ import division" to Python code generated by hy2py
This is mainly to make we don't forget this. The current state of hy2py
is more a proof-of-concept than a usable tool anyway.
Merge branch 'future_division' of github.com:khinsen/hy into pr-106
Screw it; buyer beware.