Release 0.10.0

CHANGES:

* Transition from the ocurl package name to curl.
  (Nicolás Ojeda Bär, ygrek)
* Split curl_lwt into its own package. The new library name is curl_lwt.
  (Rudi Grinberg, kit-ty-kate, ygrek)

* Fix handling of the runtime lock when calling curl multi callback cleanups.
  (Malcolm, review by ygrek, Nicolás Ojeda Bär, and Antonin Décimo)
+ Support CURL_NOPROXY.
  (Luke Palmer)
+ Get a list of headers with [get_headers] that result from repeatedly calling
  [curl_easy_nextheader] with the supplied origins and request.
  (Luke Palmer)
* Remove the Autoconf build to fully use Dune instead.
  (Nicolás Ojeda Bär, Jonah Beckford, Antonin Décimo)
* Build fixes. Bug fixes.
  (David Allsopp, ygrek, Nicolás Ojeda Bär, Luke Palmer)
+ Support CURLOPT_CLOSESOCKETFUNCTION.
  (Luke Palmer)
+ Support CURLOPT_PROXY_SSL_OPTIONS.
  (Nicolás Ojeda Bär)
+ Bind extra_fds argument to curl_multi_wait and curl_multi_poll.
  (Nicolás Ojeda Bär)
+ Add support for TCP_KEEPALIVE, TCP_KEEPIDLE, TCP_KEEPINTVL options.
  (Sewen Thy)
+ Support CURLOPT_PREREQFUNCTION. Support CURLOPT_AWS_SIGV4.
  (Albert Peschar)
* Add missing dependency on Unix.
  (David Allsopp)
+ Check for CURLOPT_XFERINFOFUNCTION.
  (ygrek)
+ Check for curl_global_sslset.
  (Nicolás Ojeda Bär)

deprecation comment