From the Dept. of Hasty Out of Order Releases:
New releases of several LV2 extensions are out, updating packaging to
the new LV2 4.0 style. LV2 extensions define extended functionality for
LV2 plugins and are primarily of interest to developers.
In particular, this provides the packages required for building the
recently released Suil and Lilv (oops!), and any other code that uses
the new URI-like #include style for LV2 extension headers.
The extensions are:
http://lv2plug.in/ns/ext/data-access
http://lv2plug.in/ns/ext/event
http://lv2plug.in/ns/ext/instance-access
http://lv2plug.in/ns/ext/midi
http://lv2plug.in/ns/ext/uri-map
Documentation, links to release tarballs, and other resources can be
found at the URIs above.
Share and enjoy,
-dr