Changes in 0.3.0
----------------
* added replay_gain_mode and replay_gain_status commands
* added mixrampdb and mixrampdelay commands
* added findadd and rescan commands
* added decoders command
* changed license to LGPL
* added sticker commands
* correctly handle errors in command lists (fixes a longstanding bug)
* raise IteratingError instead of breaking horribly when called wrong
* added fileno() to export socket FD (for polling with select et al.)
* asynchronous API (use send_<cmd> to queue, fetch_<cmd> to retrieve)
* support for connecting to unix domain sockets
* added consume and single commands
* added idle and noidle commands
* added listplaylists command
Changes in 0.2.1
----------------
* connect() no longer broken on Windows
This changes the buildlink3.mk files to use an include guard for the
recursive include. The use of BUILDLINK_DEPTH, BUILDLINK_DEPENDS,
BUILDLINK_PACKAGES and BUILDLINK_ORDER is handled by a single new
variable BUILDLINK_TREE. Each buildlink3.mk file adds a pair of
enter/exit marker, which can be used to reconstruct the tree and
to determine first level includes. Avoiding := for large variables
(BUILDLINK_ORDER) speeds up parse time as += has linear complexity.
The include guard reduces system time by avoiding reading files over and
over again. For complex packages this reduces both %user and %sys time to
half of the former time.
