2.1.0

• Added addTag addExtra function to SentryClient and Event
  e.g.:

SentryClient.shared?.addExtra("key", value: "value")
event.addTag("key", value: "value")

• Fixed a bug where 64bit uInt got converted to 32bit
• Added compatiblity for incomplete Crashreports from KSCrash
• Added internal support for upcoming react-native support
• Exposed maxCrumbs so the maximum amount of breadcrumbs can be adjusted