Merge pull request h5py#1911 from takluyver/rever-3.3

Prepare to release 3.3.0

Merge pull request h5py#1845 from takluyver/rever-3.2.1

Prepare for 3.2.1 release

Merge pull request h5py#1834 from takluyver/rever-3.2

Prepare for 3.2 release

Merge pull request h5py#1744 from takluyver/rever-3.1

Prepare for 3.1 release

Merge pull request h5py#1725 from takluyver/rever-3.0-final

Prepare for 3.0 final release

Merge pull request h5py#1695 from takluyver/rever-3.0

Preparation for 3.0.0rc1

Updated CHANGELOG for 2.10.0

REL: 2.9.0

This is the first release of the h5py 2.9 series

This release support Python 2.7 and Python 3.4-3.7

Features:
 - Convenient high-level API for creating virtual datasets
 - Construct an h5py.File from a python file-like object
 - File now takes parameters for controlling the chunk cache
 - Option to preserve insertion order of attribute and group entries
 - Can now create datasets backed by external non-HDF5 files
 - List and tuples of rriunicode strings can be stored as HDF5 attributes

Bug fixes:
 - Fix reading/writing of float128 data
 - Fix converting data to float16 when creating a dataset

Support for old Python
 - Drops support for Python 3.3
 - Drops support for Python 2.6

REL: 2.9.0rc1

The first RC for 2.9.0

REL: 2.8.0

This is the first release of the h5py 2.8 series

Features
 - allow registration of new drivers
 - add option to track object creation order

Bug fixes
 - allow slices with stop < start as empty
 - improve building with custom hdf5 installation
 - ensure libver defaults to LIBVER_EARLIEST
 - improve handling of float types
 - support non-ascii external paths on py2
 - avoid crashing IPython auto-completer

API changes
 - deprecate ``h5t.available_ftypes``.  This is no longer
   used internally and will be removed in the future.  There is
   no replacement public API.
 - Do not sort fields in compound types.  This is account for changes
   in numpy 1.14.
 - Minimum version of cython is now 0.23

Wheels hdf5 version
 - Wheels upload to pypi will be built against hdf5 1.10.2