oto: run Suspend/Resume off the calling thread on darwin

Suspend and Resume held c.cond.L to flip the toPause/toResume flags. On
iOS the audio render goroutine can hold c.cond.L for several seconds
while resume() retries transient AVAudioSession errors (e.g.
AVAudioSessionErrorCodeCannotStartPlaying), which meant the platform UI
thread could block in applicationWillResignActive / applicationDidBecome
Active for the duration of those retries.

Spawn a small goroutine to perform the cond.L acquisition and flag flip
so the caller returns immediately. The underlying audio loop, retry
policy, and error semantics are unchanged; errors from the asynchronous
transition still surface via Err on the next poll.

Updates #93

oto: recover from kAudioQueueErr_QueueInvalidated on iOS

When mediaserverd resets (e.g. AVAudioSession media services were reset),
the AudioQueue is invalidated and AudioQueueStart / AudioQueueEnqueueBuffer /
AudioQueuePause start returning kAudioQueueErr_QueueInvalidated (-66671).
Plain retry on the same handle never recovers because the queue object
itself is dead.

Recover by disposing the dead queue and rebuilding a fresh one with new
buffers. The render callback now also filters by inAQ to drop any late
callbacks delivered for a just-disposed queue.

Updates #278

oto: set default PulseAudio latency to 100ms

Without an explicit latency, PulseAudio uses its own large default
buffer (~2s), which causes a noticeable delay before audio starts
playing.

Updates hajimehoshi/ebiten#3434

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

oto: add non-cgo linux pulseaudio driver (#277)

Add pulseaudio support on linux via github.com/jfreymuth/pulse that
does not require CGO to build.

Makes it the default linux audio option, falling back to the ALSA
implementation if CGO is enabled.

Written entirely with Copilot, plus some manual human testing via the
example app.

Closes #154

all: update dependencies

windows: ask WASAPI to use a higher quality resampler (#274)

The higher quality resampler is enabled with the
AUDCLNT_STREAMFLAGS_SRC_DEFAULT_QUALITY flag. Without it, a 44100 Hz
stream played on a 48000 Hz device sounded really bad, especially in the
bass frequencies.

Updates #215

all: v3.5.0-alpha released

all: v3.4.0 released

.github/workflows: skip tests for Windows

Updates #259

all: deprecate v2

Updates #268