Remove `Cohttp_mirage` libraries, which have now moved to
mirage/mirage-http-unix and mirage/mirage-http-xen.

The previous libraries were being inconsistently compiled across
Unix and Xen, and this split is required is disambiguate them.
See mirage/mirage#161 for more information.
httponly cookie attribute
fix cookie parsing to allow = in values
update tests for case where '=' is in cookie value
Merge branch 'http_only' of git://github.com/rgrinberg/ocaml-cohttp
Merge branch 'cookie_fix' of git://github.com/rgrinberg/ocaml-cohttp
Add @rgrinberg to the authors, and sync CHANGES
Add a Max_age option for Cookie

Partially addresses #70
Make the `Response` record fields mutable to match the `Request`

Closes #67
Improve ocamldoc
Merge pull request #73 from avsm/cookie-max-age

Add a Max_age option for Cookie
Merge pull request #74 from avsm/mutable-response

Mutable response fields
Fix compilation with Async 109.58.00

(Async_core no longer exists)
Closes #77
Merge branch 'mutable-response'
Make HTTP Header handling case-insensitive (by forcing lowercase)

Closes #75
Merge pull request #78 from avsm/lowercase-headers

Make HTTP Header handling case-insensitive (by forcing lowercase)
Remove the `>>` operator as it was unused and had incorrect precedence

Closes #79
Merge branch 'master' of github.com:avsm/ocaml-cohttp
release 0.9.15

Closes #80
Merge pull request #11 from avsm/master

release 0.9.15