bp.Curvy: changed loadbang for images to pastebang

bp.Curvy: changed loadbang for images to pastebang
UI Tweaks

Now using mini dials for curves, and big knobs for A,D,S,R values.
Values > 0 = curve up, values < 0 = curve down regardless of ascending
or descending.  Added End of Decay output.  x^2 and x^1/2 curves are at
±50%.  Sustain level does not continuously adjust yet.
On/off latching switch

Counterpart to bp.Gate Pad, but stays on/off.
All-in-one Envelope (D/AD/AHD/ASR)

Full-featured all-in-one envelope.  (no ADSR, but we have other ones
for that)  Has retriggering, looping, manual triggering, CV adjustable
attack, hold, decay/release, skew, time scaling, and curve, and outputs
for End of Attack (EOA), End of Hold (EOH), and End of Decay/Release
(EOD/EOR).

It has hidden options for adjusting the min and max attack times as
well as the retrigger duration past the boundary of the bpatcher.
Updated hint text
Added normalled input

Now it can behave like the Doepfer Manual Gate which will either output
the incoming signal, or a gated voltage if no input is present.
Removed latency

Envelope now doesn’t re-attack if it’s not already attacking.