Todos for princejwesley/Mancy

These are TODOs that are seen in the code

ReplContext.js
          
            [n]);

  systemVariables = systemVariables.concat(missingGlobals);

  // TODO: revisit
  // commented because of #101
          
      
ReplCommon.js
          
            ) => {
    //TODO duplicate check
    context.module.paths = context.module.paths.concat([resolve(global