Fix code coverage with ignore statements

Ignoring the UMD bundle and curry functions imported from @most/prelude.

Hard-coded, for the time being for lack of an alternative.

flyd.js

@@ -1,11 +1,13 @@
 (function (global, factory) {
+  /* istanbul ignore next */ 
 	typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
 	typeof define === 'function' && define.amd ? define('flyd', factory) :
 	(global.flyd = factory());
 }(this, (function () { 'use strict';
 
 /** @license MIT License (c) copyright 2010-2016 original author or authors */
 
+  /* istanbul ignore next */   
   // Non-mutating array operations
 
   // cons :: a -> [a] -> [a]
@@ -22,10 +24,12 @@
     return curried
   }
 
+  /* istanbul ignore next */
   // curry3 :: ((a, b, c) -> d) -> (a -> b -> c -> d)
   function curry3 (f) {
     function curried (a, b, c) { // eslint-disable-line complexity
       switch (arguments.length) {
+        /* istanbul ignore next */ 
         case 0: return curried
         case 1: return curry2(function (b, c) { return f(a, b, c); })
         case 2: return function (c) { return f(a, b, c); }