Huffman table functions.
WMHuffman.js is a fork from zlib.js
<script src="lib/WMHuffman.js"></script>
<script>
var source = new Uint8Array([1,2,3]);
var result = WMHuffman.buildTable(source);
</script>
importScripts("lib/WMHuffman.js");
...
var WMHuffman = require("lib/WMHuffman.js");
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