Bump to v4.0.0.

seq.default.js

@@ -0,0 +1,21 @@
+import at from './wrapperAt';
+import chain from './chain';
+import commit from './commit';
+import flatMap from './wrapperFlatMap';
+import lodash from './wrapperLodash';
+import next from './next';
+import plant from './plant';
+import reverse from './wrapperReverse';
+import tap from './tap';
+import thru from './thru';
+import toIterator from './toIterator';
+import toJSON from './toJSON';
+import value from './wrapperValue';
+import valueOf from './valueOf';
+import wrapperChain from './wrapperChain';
+
+export default {
+  at, chain, commit, flatMap, lodash,
+  next, plant, reverse, tap, thru,
+  toIterator, toJSON, value, valueOf, wrapperChain
+};