Engine: Protocol Features, coverage, types, BTC markets websocket (#368)

* Attempts to update orderbook so it doesn't need to sort

* Reverts the ws ob stuff. Gets rid of sorting because it happens later. Adds some exchange features

* update existing feature lists. Expands list definition to match my emotions

* Adds bithumb bitmex and bitstamp. adds a couple more types

* Features for you, features for me, features for bittrex, btcmarkets, btse, coinbasepro, coinut, exmo, gateio and gemini

* Features for hitbtc, huobi, itbit, kraken, lakebtc, lbank, localbitcoins, okcoin, okex, poloniex, yobit, zb

* Who can forget good old alphapoint?

* Adds btcmarksets websocket :glitch_crab: fixes alphapoint features

* Adds extra data not in the documentation :/

* Replaces websocket features by using protocol features. However, it breaks it due to import cycles. I'm not sure what I'll do just yet

* Removes import cycle via duplicate structs.

* Increases coverage of config with `TestCheckCurrencyConfigValues`. Moves all currency pair package types into their own files or places it at the bottom of files if necessary

* Increase coverage in code.go

* One way of determining a test has failed, is when to it fails. Removed redundant explanation

* Increases code coverage of conversion

* Lint fixes

* Fixes orderbook tests

* Re-adds sorting because its important to still have the internal pre-processed orderbook to be representative of a real orderbook

* Secret lints that did not show up via Windows linting

* Adds protocol package to contain exchange features

* Fixes protocol implementation

* Fixes ws tests

* Addresses the following: Removes st-st-stutters in config types, changes GetAvailableForexProviders -> GetSupportedForexProviders, removes errors from tests where error is nil, removes orderbook setup when not necessary, removes import newlines, removes false bools from declaration, changes should of to should have

* imports and casing

* Fixes two more nil error checks

cmd/config/config_test.go

@@ -6,13 +6,13 @@ func TestEncryptOrDecrypt(t *testing.T) {
 	reValue := EncryptOrDecrypt(true)
 	if reValue != "encrypted" {
 		t.Error(
-			"Test failed - Tools/Config/Config_test.go - EncryptOrDecrypt Error",
+			"Tools/Config/Config_test.go - EncryptOrDecrypt Error",
 		)
 	}
 	reValue = EncryptOrDecrypt(false)
 	if reValue != "decrypted" {
 		t.Error(
-			"Test failed - Tools/Config/Config_test.go - EncryptOrDecrypt Error",
+			"Tools/Config/Config_test.go - EncryptOrDecrypt Error",
 		)
 	}
 }

cmd/exchange_template/test_file.tmpl

@@ -24,7 +24,7 @@ func TestSetup(t *testing.T) {
 	cfg.LoadConfig("../../testdata/configtest.json")
 	{{.Name}}Config, err := cfg.GetExchangeConfig("{{.CapitalName}}")
 	if err != nil {
-		t.Error("Test Failed - {{.CapitalName}} Setup() init error")
+		t.Error("{{.CapitalName}} Setup() init error")
 	}
 
 	{{.Name}}Config.API.AuthenticatedSupport = true

cmd/websocket_client/main.go

@@ -76,7 +76,7 @@ func SendWebsocketEvent(event string, reqData interface{}, result *WebsocketEven
 
 func main() {
 	cfg := config.GetConfig()
-	err := cfg.LoadConfig(config.ConfigFile, true)
+	err := cfg.LoadConfig(config.File, true)
 	if err != nil {
 		log.Fatalf("Failed to load config file: %s", err)
 	}