Ubelt

Changed
* `ub.repr2` now encodes inf and nan as `float('inf')` and `float('nan')` to
allow output to be evaluated.
* `ub.grab_data` now uses the hasher name in the cached hash stamp file.

Fixed
* Fixed issue in setup.py that broke the previous release.

NOTE: THIS RELEASE WAS BROKEN DUE TO AN ISSUE WITH THE SETUP SCRIPT

Added
* `dpath` and `fname` keywords to the `ub.download` function.
* `modname_to_modpath` can now find modules referenced by egg-link files.
* `ub.sorted_keys` and `ub.sorted_vals` for sorting dictionaries


Fixed
* `ub.download` now accepts `sha256` and `md5` hashes.

Changed
* The argument names in `ub.group_items`, `groupids` was changed to `key`.
* The argument names in `ub.dict_hist`. `item_list` was changed to `items`,
`weight_list` was changed to `weights`.
* The argument names in `ub.flatten`. `nested_list` was changed to `nested`

Added
* Added `check` kwarg to `ub.cmd`, which when True will raise a
`CalledProcessError` if the exit-code is non-zero.
* Added support for pypy.

Changed
* Moved `timerit` to its own module.

Fixed
* Fixed corner case where `util_hash` raised an import error when python was
not compiled with OpenSSL.

Fixed
* Removed the `NoParam.__call__` method. This method should not have been
defined, and by existing it caused issues when using `NoParam` as a
column-key in pandas.