v0.10.13

#227 support for flamegraphs
#225 REPL, _node and _coffee read their default options from .streamline.json (thanks Aseem Kishore)
#228 flows.setTimeout improvement for timeout values > 0x7fffffff
#222 top-level transformation hook (thanks Calvin Wiebe)
#204 improved stack traces (no duplication between async and raw stacks)
#224 "use strict" not always honored (fibers and generators).
#221 exception not caught in sync edge case (callbacks only).