implement smarter input generation

[frewsxcv]

ruby-coverage-guided-fuzzer/run.rb

Lines 51 to 52 in 8732403

	# TODO: better input generation
	bytes = Random.new.bytes(10)

https://github.com/google/honggfuzz/blob/master/mangle.c

[nickjenkins83]

I know this is a year old request but wouldn't incorporating this repo Raddant be a good choice for this? Radamsa is a top input generator.
https://github.com/tduehr/raddant/blob/master/lib/raddant.rb