v0.7.0

fixes:

• avoid possible crash when abusing the arity of swap() 77baf38
• avoid deadlock when input sending/receiving fails a7700ac
• limit render's output length eaa8842

new:

• make swap() work without the need to specify arity in op string ca74b8a (not a breaking change)
• make kr() work with arbitrary arity 181eaed a2d8e80 5b368a1 89ba1ba
• buffer nodes to get samples from the audio graph and use outside 42048bc 945424d
• :reset_cam command dd0e9b8

full changelog: v0.6.3...v0.7.0