Dictate 2.3.6

Dictation is now pipelined: press the key while the previous phrase is
still being recognized and recording starts instantly - no more
swallowed presses between thoughts. Results always paste in the order
you spoke them, and with a quick rhythm the previous phrase lands in
your document while you're already dictating the next one, so the
recognition wait effectively disappears.

Switching between the plain and translate keys is seamless: pressing
one while holding the other hands the capture over on the spot, even
when the presses overlap by a few milliseconds, and the microphone
stays hot through the switch - not a syllable is lost at the boundary.

Esc now has clear scope: while recording it cancels just that capture,
otherwise it abandons everything still being recognized.

Also fixed: a quick accidental tap can no longer starve the next
recording's start, and a too-early verdict no longer shows a spurious
"didn't catch that" after a fraction-of-a-second tap.

Full Changelog: v2.3.5...v2.3.6