v 2.1.0.
Removed Funny.push from Train for speed improvements.
Added a fast push of a single element: #fpush.
Added a note for faster result, pushing directly to the Train.qtail.
Added benchmarks for #fpush and direct push method.
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On branch master
modified:   Readme.md
new file:   bench/push-train-fast-2^24-items-bench.js
new file:   bench/push-train-faster-2^24-items-bench.js
modified:   lib/train.js
modified:   package.json