* Development mode for Signer

* CLI option for signer-dev

* Renaming CLI option

* Make obvious that CLI option is insecure.

[ci:skip]

* Additional warning over security

* Mining fixes.

- Use queue to determine whether we're mining
- Kick stale hash rates

Fixes #1794
Fixes #1641

* Fix tests.

* Address grumbles.

* removed frombytes stuff

* removed jsonrpc handler from nano

DRYing build scripts

Allow code from spec json

* fix nano interface

* add nano tests to target

* Place thread name in the log output

...But only when more than info.
Closes #1463

* simpler method

* fixed compilation

* Fix warnings

* fix remaining tests

* add to ci and fix test.sh

dynamic keys pickup

ipc version bump

Prevent deadlock on trace GC

* removed configure_cache method

* generic cache_manager struct

* fixed #1743, tracing caches are cleared

* removed deadlocks in garbage_collect, implemented HeapSizeOf for traces

* trace cache config

* fixed carbage typo

* Return storage as H256 from RPC.

* Fix test.

* add an instant sealing engine

* add sealing engine tests

* rename to InstantSeal

* update name in json

* whitespace

[ci:skip]

* fix state unsafety with a mostly-guaranteed handle

* ensure_cached takes a closure directly

* Optimizing mem_gas_cost calculations

* Memoizing current mem gas cost

* Optimizing jump destinations

Min and Max peers setting

* Disable WAL

* Make WAL optional

* Fix tests.

* Update cli.rs

Log tweak