habanero v0.3.0

• Added more documentation for field queries, describing available fields that support field queries, and how to do field queries (#50)
• sample parameter maximum value is 100 - has been for a while, but wasn't updated in Crossref docs (#44)
• Updated docs that facet parameter can be a string query in addition to a boolean (#49)
• Documented new 10,000 max value for /works requests - that is, for the offset parameter - if you need more results than that use cursor (see https://github.com/CrossRef/rest-api-doc/blob/master/rest_api.md#deep-paging-with-cursors) (#47)
• Added to docs a bit about rate limiting, their current values, that they can change, and how to show them in verbose curl responses (#45)
• Now using https://doi.org for cn.content_negotation - and function gains new parameter url to specify different base URLs for content negotiation (#36)
• Fixes to kwargs and fix docs for what can be passed to kwargs (#41)
• Duplicated names passed to filter were not working - fixed now (#48)
• Raise proper HTTP errors when appropriate for cn.content_negotiation thanks @jmaupetit (#55)