Added depth rules for bounds.
Safely build PyKE rule base.
Merge pull request #435 from bjlittle/pyke_rule_compile

Safely build PyKE rule base.
Added cfchecker to travis-ci
Merge pull request #449 from esc24/cfchecks

Added cfchecker to travis-ci
Added tolerances to Coord.is_contiguous()
changed unit syntax
Merge pull request #459 from esc24/is_contiguous_tol

Added tolerances to Coord.is_contiguous()
Merge pull request #465 from cpelley/unit_syntax_chng

Improved unit syntax on cube.__str__.
pep8 __init__ and _constraints
Pandas 1D & 2D
Merge pull request #427 from bblay/pep8

Pep8 init and constraints
Merge pull request #439 from bblay/pandas_1d

Pandas 1D and 2D
pandas 0.11
Merge pull request #473 from bblay/pandas_0.11

Pandas 0.11
Modified logic in Unit.convert to handle numpy scalars.
nimrod level type 12
Merge pull request #199 from bblay/nimrod_t

nimrod level type 12
Merge pull request #472 from esc24/convert_np_int32

Modified logic in Unit.convert to handle numpy scalars.
Merge pull request #451 from bjlittle/ocean_depth

Added depth rules for bounds.