* small identity refactor:
+ Optimize? iterative cert chain methods to use array instead of slice
+ Add `ToChain` helper for converting 1d to 2d cert chain
TODO: replace literal declarations with this
+ rename `ChainRaw/RestChainRaw` to `RawChain/RawRestChain`
(adjective noun, instead of nound adjective)
* add regression tests for V3-1320
* fix V3-1320
* separate `DialUnverifiedIDOption` from `DialOption`
* separate `PingNode` and `DialNode` from `PingAddress` and `DialAddress`
* update node ID while bootstrapping
* goimports & fix comment
* add test case
* separate TLS options from server options (because we need them for dialing too)
* stop creating transports in multiple places
* ensure that we actually check revocation, whitelists, certificate signing, etc, for all connections.
