Merge branch 'v2-prototype' into feature/website/jobs-page-part2

* v2-prototype: (103 commits)
  Add changelog entry for @0xproject/utils
  Add AbortController polyfill to fetchAsync in utils
  Increase node heap size for webpack command
  Add missing timestamp to CHANGELOG entries
  Upgrade some @0xproject packages to 1.0.0 in website
  Hard code fillOrder selector into abiEncodeFillOrder
  Returns byte array instead of memory range for encoding fillOrder calldata
  Created LibAbiEncoder with `fillOrderNoThrow`
  Add missing dep in migrations
  Fix the abi-gen entry point
  Fix linter error
  Remove the postinstall hook
  Update website package.json with original imports
  @0xproject/sra-report@1.0.0
  Change all package to depend on the new @0xproject/connect@1.0.0
  @0xproject/connect@1.0.0
  Use old assert version in @0xproject/connect
  FIx a typo
  Remove rc versions from unmigrated packages
  0x.js@1.0.0-rc.2
  ...

1 files changed, 15 insertions, 1 deletions

diff --git a/packages/react-docs/src/components/documentation.tsx b/packages/react-docs/src/components/documentation.tsx
index a4e6f4f6e..ff33220d2 100644
--- a/packages/react-docs/src/components/documentation.tsx
+++ b/packages/react-docs/src/components/documentation.tsx
@@ -12,6 +12,7 @@ import {
 import * as _ from 'lodash';
 import CircularProgress from 'material-ui/CircularProgress';
 import * as React from 'react';
+import * as semver from 'semver';
 
 import { DocsInfo } from '../docs_info';
 import {
@@ -180,7 +181,20 @@ export class Documentation extends React.Component<DocumentationProps, Documenta
         return renderedSections;
     }
     private _renderSection(typeDefinitionByName: TypeDefinitionByName, sectionName: string): React.ReactNode {
-        const markdownFileIfExists = this.props.docsInfo.sectionNameToMarkdown[sectionName];
+        const markdownVersions = _.keys(this.props.docsInfo.sectionNameToMarkdownByVersion);
+        const eligibleVersions = _.filter(markdownVersions, mdVersion => {
+            return semver.lte(mdVersion, this.props.selectedVersion);
+        });
+        if (_.isEmpty(eligibleVersions)) {
+            throw new Error(
+                `No eligible markdown sections found for ${this.props.docsInfo.displayName} version ${
+                    this.props.selectedVersion
+                }.`,
+            );
+        }
+        const sortedEligibleVersions = eligibleVersions.sort(semver.rcompare.bind(semver));
+        const closestVersion = sortedEligibleVersions[0];
+        const markdownFileIfExists = this.props.docsInfo.sectionNameToMarkdownByVersion[closestVersion][sectionName];
         if (!_.isUndefined(markdownFileIfExists)) {
             return (
                 <MarkdownSection