GCT: general updates across codebase (#699)

* orderbook: export orderbook nodes for external strategy inspection

* orderbook: Add in methods for locking and unlocking multiple books at the same time e.g. book1.LockWith(book2); defer book1.UnlockWith(book2)

* include waiting functionality for depth change alert

* backtester: add word.

* log: include logger changes to impl with downstream integration

* engine: reduce params for loading exchange

* assort: rm verbose in tests, change wording in ob, expose sync.waitgroup for ext. sync options

* ticker: reduce map look ups and contention when using RW mutex when there are over 80% writes adds find last function to get the latest rate

* engine/syncmanager: add in waitgroup for step over for external package calls

* cleaup

* engine: linter fix

* currency/fx: include all references to fiat currencies to default

* orderbook: Add in fields to Unsafe type for strategies to detect potential out of sync book operations

* syncmanager: changed config variable to display correct time

* ordermanager: Add time when none provided

* currency/manager: update getasset param to get enabled assets for minor optimizations

* ftx: use get all wallet balances for a better accounts breakdown

* orderbook: unlock in reverse order

* bithumb: fixes bug on market buy and sell orders

* bithumb: fix bug for nonce is also time window sensitive

* bithumb: get orders add required parameter

* bithumb: Add asset type to account struct

* currency: improve log output when checking currency and it fails

* bithumb: Add error return on incomplete pair

* ticker:unexport all service related methods

* ticker/currency: fixes

* orderbook: fix comment

* engine: revert variable name in LoadExchange method

* sync_manager: fix panic when enabling disabling manager

* engine: fix naming convention of exported function and comments

* engine: update comment

* orderbook: fix comment for unsafe type

exchanges/stream/websocket_test.go

@@ -375,7 +375,6 @@ func TestWebsocket(t *testing.T) {
 		t.Fatal("should not be connected to able to shut down")
 	}
 
-	ws.verbose = true
 	ws.setConnectedStatus(true)
 	ws.Conn = &dodgyConnection{}
 	err = ws.Shutdown()
@@ -546,7 +545,6 @@ func TestConnectionMonitorNoConnection(t *testing.T) {
 	ws.ShutdownC = make(chan struct{}, 1)
 	ws.exchangeName = "hello"
 	ws.trafficTimeout = 1
-	ws.verbose = true
 	ws.Wg = &sync.WaitGroup{}
 	ws.connectionMonitor()
 	if !ws.IsConnectionMonitorRunning() {