Nameparser

- Remove "CONSTANTS.suffixes", replaced by "suffix_acronyms" and "suffix_not_acronyms" (49)
- Fix broken support for multiple suffixes separated by periods instead of commas, e.g. "John Doe Msc.Ed."
- Add "du" to prefixes
- Add ["sheikh" variations](https://github.com/derek73/python-nameparser/commit/46fdebcff59b444b66ec17301a69fe5048cca60c) to titles
- Add [parameter to force capitalization](http://nameparser.readthedocs.io/en/latest/usage.html#capitalization-support) of mixed-case strings

- Clarify LGPL licence version (47)
- Skip pickle tests if pickle not installed (48)

- Fix string format when `empty_attribute_default = None` (45)
- Include tests in release source tarball (46)

- Add `CONSTANTS.empty_attribute_default` to customize value returned for empty attributes (44)

- Improve string format handling
- Improve customization documentation

- Fix first name clash with suffixes (42)
- Fix encoding of constants added via the python shell
- Add "MSC" to suffixes, fix 41