Add OnRenderProcessTerminated - Resolves issue #207
Set Headers now iterates over key

The NameValueCollection iterator returns the string key, not a
KeyValuePair.
Tabs -> spaces per cefsharp guidelines.

Tabs -> spaces per cefsharp guidelines.
NameValueCollection allows for duplicate keys.

For each key get each of the values that matches the key.
Merge pull request #413 from rlmcneary2/master

Set Headers now iterates over key
Implemented Cut, Copy, Paste and other text based actions for WPF
Fix crash when responding to request that was previously cancelled by CEF (e.g. due to page reload)
Merge pull request #433 from numbersint/fixes/cancelled_request

Fix crash when responding to cancelled request, take 2
Merge pull request #423 from taylorjonl/feature/text-based-commands

Implemented Cut, Copy, Paste and other text based actions for WPF
Merge pull request #396 from amaitland/feature/OnRenderProcessTerminated

Add OnRenderProcessTerminated - Resolves issue #207
Merge remote-tracking branch 'remotes/upstream/master' into enhancement/minor-api-changes