v0.7.2-beta.1

• The internal HttpClient now respects the value of the SimultaneousRequests constant
• Changed requestsPerSecond to be a byte instead of ushort
  • Nobody should be making over 255 requests per second, let alone up to 65,535
• Upped the hard cap on requests from 25req/sec to 50req/sec
  • Going over 25req/sec is still not recommended, and 250req/10sec/IP is still the "official" limit
• Some Exception messages are slightly more detailed
• Removed AuthHeaderType
  • The only type we're using is Bearer, since we don't use the Basic auth for OAuth
• Made OAuth much simpler by removing unnecessary params (see previous note)
• Add ability to provide state parameter when getting authentication URL
• Add documentation for almost everything BungieSharper
• Fix Semaphore deadlocks when API responses are empty JSON