Healpy

* updated healpix CXX to 786 (trunk) https://github.com/healpy/healpy/pull/280
* drop support for Python 2.6 https://github.com/healpy/healpy/pull/268
* option to read all fields with `read_map` https://github.com/healpy/healpy/pull/258
* `write_map` and `read_map` support for partial sky maps https://github.com/healpy/healpy/pull/254
* Allow `read_map` to also take an HDUList or HDU instance https://github.com/healpy/healpy/issues/249

* Renamed `get_neighbours` to `get_interp_weights` https://github.com/healpy/healpy/issues/240
* Updated HEALPix C++ to fix bug in `query_disc` https://github.com/healpy/healpy/issues/229

* Fixed another permission issue on install-sh

* Fix permission issue in the release tarball https://github.com/healpy/healpy/issues/220

* Several fixes in the build process
* Support for `astropy.fits` https://github.com/healpy/healpy/pull/213

* Added `common.pxd` to source tarball
* Check that nside is less than 2^30 https://github.com/healpy/healpy/pull/193