Title: lv2 1.4.0
Date: 2013-02-17 00:00
Slug: lv2-1-4-0
Author: drobilla

[lv2 1.4.0](http://lv2plug.in/spec/lv2-1.4.0.tar.bz2) has been released.

Changes:

 * Add metronome example plugin to demonstrate sample accurate tempo sync.
 * Generate book-style HTML documentation from example plugins.
 * atom: Fix lv2_atom_sequence_end().
 * atom: Remove atom:stringType in favour of owl:onDatatype so generic tools can understand and validate atom literals.
 * atom: Improve atom documentation.
 * buf-size: Fix typo in bufsz:sequenceSize label.
 * core: Add lv2:control for designating primary event-based control ports.
 * core: Reserve minor version 0 for unstable development plugins.
 * core: Add lv2:EnvelopePlugin class.
 * core: Make lv2:Parameter rdfs:subClassOf rdf:Property.
 * core: Set range of lv2:designation to lv2:Designation.
 * event: Fix incorrect return type in lv2_event_get().
 * log: Add logger convenience API.
 * options: Set the range of opts:requiredOption and opts:supportedOption to opts:Option.
 * patch: Add patch:readable and patch:writable for describing available properties.
 * patch: Make patch:Set a compact message for setting one property.
 * state: Add state:loadDefaultState feature so plugins can have their default state loaded without hard-coding default state as a special case.
 * ui: Fix incorrect linker flag in ui:makeSONameResident documentation.