Add missing Debug impls

src/location.rs

@@ -2,6 +2,7 @@ use std::fmt::Display;
 
 use crate::SymbolTables;
 
+#[derive(Debug)]
 pub enum Location {
     Symbol((String, String)),
     Address(u32),

src/main.rs

@@ -39,6 +39,7 @@ use std::{
     process,
 };
 
+#[derive(Debug)]
 pub struct SymbolTable {
     symbols: HashMap<String, Symbol>,
     breakpoints: Vec<String>,

src/symbol.rs

@@ -2,6 +2,7 @@ use std::fmt::Display;
 
 use elf::symbol::Symbol as ElfSymbol;
 
+#[derive(Debug)]
 pub struct Symbol {
     section: u16,
     value: u32,