POSIX thread safety

Doesn't depend on Re_str any more.

Fix path encoding bugs

1.4.0 (2014-02-16):

• Fix path and path_and_query encoding bugs (mirage#35).
• Fix userinfo percent-encoding/delimiter bug (mirage#35).
• Add optional scheme parameter to encoding_of_query.

Add sexp converters

Merge pull request #4 from avsm/master

add sexp representation

Be less strict about bad percent encoding

1.3.12 (2013-12-28):

• Be lenient about decoding incorrect encoded percent-strings (mirage#31).
• Improve ocamldoc for Uri.of_string.
• Regenerate build files with OASIS 0.4.1.
• Add an mldylib to build the cmxs Natdynlink plugin properly (mirage#29).

Add relative/relative parsing

1.3.11 (2013-10-13):

• Add relative-relative URI resolution support.
• OCamldoc fixes.
• Add Travis continous build tests.

ocaml-uri-1.3.10

1.3.10 (2013-09-05):

• Rename Install_printer to Uri_top to prevent conflict with other libraries with similar name (mirage#24).

ocaml-uri-1.3.9

1.3.9 (2013-08-30):

• Add back support for OCaml 3.12.1 by fixing the compiler-libs linking.