* Add a top-level printer for `Uri.t` that converts it to a string instead of just displaying an `<abstract>` type.
Fix ocamldoc
Add `Uri.get_query_param` which returns a list of values associated with a query key.
bump oasis to 1.3.8
Add `Uri.get_query_param` which selects a single value for a query key.

Suggested by @dsheets
tag 1.3.8