- Clarified Dispose logic for ConPTY Terminal and Process
- Disposing a ConPTY Process now kills it and its children
- ConPTY Terminal now cleans up everything in its Dispose
- Wired up missing Dispose calls in various finalizers
- Removed CTRL_CLOSE_EVENT handling. This event never seems to actually happen.
Fixes https://github.com/jumptrading/FluentTerminal/issues/94