Update changelog
numba types notebook rewritten
clean rerun for the tutorial.
Update docs and examples
Add static versions of ipython notebook tutorials to documentation
Mark language spec as outdated in documentation
Fixed 2 typos in tutorials/Numba First Steps.ipynb
Fixed some typos in tutorials/Numba types.ipynb
Fixed a typo in tutorials/Numpy and numba.ipynb
Merge pull request #389 from gef3233/master

Fixed some typos
proposal for new change log
revised Numpy and numba tutorial notebook for numba 0.12
Merge pull request #391 from numba/changelog-edit

proposal for new change log
vectorize default target is now called 'cpu' as in guvectorize and jit.

- docstring updated accordingly
- NumPy and numba tutorial rerun so that the shows docstring is updated.
Update docs
Update CHANGE_LOG
Update release notes in documentation
Add support for unary ufuncs with different input and output types
Add support for negative ufunc in nopython mode
Fix boolean expressions