Util file changes Array.prototype.toString

[jariztia]

Changes Array.prototype.toString adding a space between items, this breaks things that expect items to be strictly comma separated. (no spaces between items)

File rlab/lib/util.js line 289:

Array.prototype.toString = function() { return U.vstr(this) };

I don't see the file in the repo, but is referenced in rlab/lib/set.js

module.exports = R = S = require("./util");