* Switches to current v2 version of urfave CLI
* Fixes incorrect port values in the help
* Provides defaults directly to urfave for clear `--help` messaging
* `--base-path` flag renamed to `--data-dir`. This matches `monerod`'s' `--data-dir` and almost matches the `geth` flag `--datadir`
* Bootnodes and contract address are provided for stagenet testing
* Bootnodes can be provided individually by repeating the `--bootnodes`/`--bn` flag, or as a comma separated block (original behavior), or even a combination of both. (Makes adding/removing bootnodes a lot easier.)
* More precise error messaging when XMR maker/taker values are off
* Fixes bug in the peer finder where XMR was hardcoded as the provides coin
* `cleanup-test-processes.sh` displays which processes are being killed
* Fixes lock issues on the XMR Maker's offer list (new package protocol/xmrmaker/offers)
* Fixes lock issues on the swapState maps
* Fixes go routine sync issues in TestError_ShouldOnlyTakeOfferOnce that were sometimes breaking TestSuccess_ConcurrentSwaps
* Ensures that the id field of "types.Offer" is initialized when created
