progress
simplifies lines
removes extra argument within lines
extracts enqueue_after function
finishes concat.js
solves http-server challenge
simplifies result writing
notes source of to_upper fn
solves http-client challenge
solves websockets challenge
exploits end(bytes) as write + end
solves html-stream challenge
solves duplexer challenge
solves duplexer-redux

This turned out to be a great intro to the gory details of variable
binding and function declarations versus expressions
due to the way I wrote it.
adds combiner - not yet verifying

Oddly, I get no output whatsoever for run or verify.
verifies combiner solution

Through end fn had to queue null to flush the stream.
solves crypt challenge
solves secretz
improves isFile test
adds LICENSE.txt