fix: add createIntlCache to top level index, fixes #1393

Author: longlho

docs/Advanced-Usage.md

@@ -4,7 +4,7 @@
 
 <!-- toc -->
 
-- [Pre-parsing messages](#core-react-intl--pre-parsing-messages)
+- [Pre-parsing messages](#pre-parsing-messages)
   - [Caveats](#caveats)
 - [Imperative APIs](#imperative-apis)
 

src/index.ts

@@ -29,3 +29,4 @@ export {default as FormattedRelativeTime} from './components/relative';
 export {default as FormattedPlural} from './components/plural';
 export {default as FormattedMessage} from './components/message';
 export {default as FormattedHTMLMessage} from './components/html-message';
+export {createIntlCache} from './utils';