Enhancement - Aliases

- Moved alias mapping to Context.
- Added Context::canonicalize to resolve aliases.
- Added Context::loadAliases to reload on config file change.
- Removed old alias processing from Cmd.
- Doesn't work yet, but the data is loaded.

src/Cmd.cpp

@@ -165,30 +165,6 @@ void Cmd::load ()
         }
       }
     }
-
-/*
-    // Now load the aliases.
-    foreach (i, all)
-    {
-      if (i->substr (0, 6) == "alias.")
-      {
-        std::string name = i->substr (6, std::string::npos);
-        std::string alias = context.config.get (name);
-
-        // Make sure a custom report does not clash with a built-in
-        // command.
-        if (std::find (commands.begin (), commands.end (), report) != commands.end ())
-          throw std::string ("Alias '") + name +
-                "' conflicts with built-in task command.";
-
-        if (std::find (customReports.begin (), customReports.end (), report) != customReports.end ())
-          throw std::string ("Alias '") + name +
-                "' conflicts with custom report.";
-
-        aliases[name] = alias;
-      }
-    }
-*/
   }
 }