strng 1.1 brings new features

Of recent synth apps this is one of my favs, and from an excellent developer too. So here's what's new in strng 1.1:

• Adding dynamic piano mode (attack, sustain level, bit crush, resonant filter).
• Extending tempo speeds to 15-240 bpm.
• Adding delay x axis lock (double tap).
• Fixing lfo filter end frequency bug.