function parseEra(data) {
						// some runtimes (like Mozilla Rhino) does not preserves
						// key order so we have to sort values manually
						return Object.keys(data.eras).sort(function (a, b) {
							return parseInt(a.substr(1)) - parseInt(b.substr(1));
						});
					}
Parses era data from Can I Use raw database
@param  {Object} data
@return {Array}