Fix Amazon Silk detection
Fix Mobile Safari version # regex
Add test cases
Retain patch number for Mobile Safari
Move Silk even earlier in file to take priority over Chrome Mobile
Move NetFront to stay a step ahead of the new location of Silk
fix the match group detection
Merge pull request #455 from floydsoft/patch-1

fix the match group detection
Merge pull request #452 from drucifer/master

Regex tweaks for Amazon Silk and Mobile Safari
Merge branch 'master' of https://github.com/tobie/ua-parser