* updated util and libwallet with thiserror
* update impl crate to thiserror
* api crate converted to thiserror
* update of controller crate to thiserror
* update final bin + tests to thiserror
* update unused import
* remove failure derive
* reset import of grin to master
* update cargo lock
* update from master
* change all user-facing instances of addresses to a SlatepackAddress
* finish renaming get_slatepack_address + documentation
* get_slatepack_secret_key OwnerRPC implementation and test
* add owner api functions
* OwnerRPC functions + doctests
* add explicit slatepack API tests to exercise encryption
* update api function names to better reflect RFC
* make transaction field in V4 Slate optional
* add mutable/non mutable version of tx getter
* removal of mut references where not needed
* remove more muts
* update from master
* update from master
* test fixes
* refactor address generation code into libwallet, bool to flag whether to include proof, add sender address in init_send_tx
* rustfmt
* require payment proof addr as part of init_tx
* rustfmt
* store payment proof on sender transaction side
* rustfmt
* change sig to ed25519 sig
* rustfmt
* add message creation and signature
* rustfmt
* add payment proof verification function
* rustfmt
* validate proof on sender side, store proof
* rustfmt
* fix json tests
* fixes and updates to tests
* added API functions for converting and retrieving proof addresses
* rustfmt
* add payment proof to init_send_tx example
* rustfmt
* incorrect comment
* adding initial version of init_secure_api
* rustfmt
* fix ECDH algo
* rustfmt
* trying to figure out best way of doing encryption
* refactor secure requests and responses into json-rpc responses, with base64 payload for encrypted messages
* rustfmt
* return proper errors from encrypted api, include tests covering encrypted API error cases
* rustfmt
* add test for normal error (unencrypted)
* rustfmt
* change ports for test, add foreign listener to V2 sanity tests, add ability to select owner api port via command line
* rustfmt
* turn it to 11
* explicit teardown after rpc tests
* update tests with explicit teardowns
* update tests to perform explicit teardown
* fix warnings, ensure all tests teardown
* log output to diagnose CI windows build failures
* disable owner api doctests on windows
* rustfmt
