Add utility to insert pipeline stages in a given ordered pipeline
Link cbuilder utilities only once
Give the numba environment a name
Visit children on unmatched loop iterable
Better sorthing of error and warning messages
Allow tracking function environments for partially processed ASTs
Fix test_multiarray_api
Use env to determine variable status
Allow creation and use of partial function environments
Allow overriding the function and translation environments
Add control flow graph to the pipeline environment
Changed except clause in PipelineStage to use Py3k-compatible syntax.
Add basic docstrings for the AST pretty-printing utilities.  Modify numba.utils.dump() to pass along any additional arguments to numba.utils.pformat_ast().
Use node metadata for variable status
Allow default for querying metadata
Use new pipeline to lower wrapper AST before code generation
Generalize calling pointers to functions
Support for CFFI (Issue #131)
Make visit_Suite mutate ast.Suite during control flow analysis
Incorporate some closure properties into pipeline environment