* remove references to no-longer existing switch commitment hash
(as switch commitments were removed in ca8447f3bd
and moved into the blinding factor of the Pedersen Commitment)
* some rewording (points vs curves) and fix of small formatting issues
* Add switch commitment documentation
* wip - coinbase maturity and output lock height docs
* tbd spend an output
* expand on how we prove ownership of an output to spend it
* add proposed solution
* fixup output hash description