v0.4.0.
Fix bug in 'listen' emitting, on offline reset command queue and parser.
Update Bilanx dependency, reomved rollback form #reset.
Added subscription benchmark files and relative notes/instructions.
On branch master
modified:   Readme.md
new file:   bench/deuces-long-message-bench.js
new file:   bench/deuces-short-message-bench.js
new file:   bench/run.sh
modified:   lib/deuces.js
modified:   package.json