UA Parser 0.2.1

• fix regex rewriting which didn't trigger properly in a significant number of cases: any repetition following an explicit character class would be left as-is, leading to memory use being cut down by ~60% (and #2 should have cut down memory use by 75% rather than 15-ish...) #29
• use an atom length of 2 for device parsers, improves performance by 40% at essentially no memory cost, don't touch ua and os as it reduces their performances by 510% instead #31 / #32