Bot now takes a vec of pairs directly

src/bot.rs

@@ -20,18 +20,12 @@ impl BfxBot {
     // TODO: change constructor to take SymbolPairs and not Symbol
     pub fn new(
         exchanges: Vec<ExchangeDetails>,
-        trading_symbols: Vec<Symbol>,
-        quote: Symbol,
+        trading_pairs: Vec<SymbolPair>,
         tick_duration: Duration,
     ) -> Self {
-        let pairs: Vec<_> = trading_symbols
-            .iter()
-            .map(|x| SymbolPair::new(quote.clone(), x.clone()))
-            .collect();
-
         let exchange_managers = exchanges
             .iter()
-            .map(|x| ExchangeManager::new(x, &pairs))
+            .map(|x| ExchangeManager::new(x, &trading_pairs))
             .collect();
 
         BfxBot {