/86     define bpm, 86 by default (optional)
/1-9=   define kit id for sequence

## step triggers
a-z     trigger key, oneshot
A-Z     trigger key, note on until next
_       skip step, not blocking "note on" triggers
:       mute step, blocking "note on" triggers
!       repeat last note, including transient modifiers
?       repeat last note, decrease volume 25% (i.e. manual echo)
&       layer next with previous note, i.e. jump back to previous position
*       jump to start on next step and repeat sequence
;       jump to start on next bar and repeat sequence

## persistent modifiers
(       increase step resolution
)       decrease step resolution
[       start block, nestable, applies transient modifiers to block
]       end block
,       start triplet resolution (48 > 32)
.       stop triplet resolution (32 > 48)

## transient modifiers
+       pitch up next note (1/12th)
-       pitch down next note
%       lower volume 20% for next note
^       raise volume 20% for next note
{       pan next note to 25% left
}       pan next note to 25% right
<       pull next note cursor 1/12th step back
>       push next note cursor 1/12th step forward
~       shift sample starting point 0.1 seconds
'       fade in next note attack in 0.1 seconds
`       fade out next note release in 0.1 seconds
≈       reverse next note or group
∞       loop the first 0.1 seconds of sample

## transient modifier parameters
+52     pitch up next note (52/100th)
-18     pitch down next note (18/100th)
%33     lower volume 33% for next note
^10     raise volume 10% for next note
{40     pan next note to 40% left
}60     pan next note to 60% right
<10     pull next note cursor 10 ticks back
>8      push next note cursor 8 ticks forward
~350    shift sample starting point 0.35 seconds
'250    fade in next note attack in 0.25 seconds
`800    fade out next note release in 0.8 seconds
∞250    loop the first 0.25 seconds of sample
§333    set next note sample maxlength to 0.333 seconds

$ npm install --save qwak

var qwak = require('qwak');
var pattern = qwak.parse('/qwak');

/qwak           The most basic qwak sequence
/q+wa-k         Pitch "w" note up, and "k" down
/90/2=foxobaxa  Use kit 2 at 90 bpm