Merge pull request #750 from GetStream/export-channel-preview-helpers

export ChannelPreview helpers

Author: DanC5

src/components/ChannelPreview/index.js

@@ -3,3 +3,4 @@ export { default as ChannelPreviewCompact } from './ChannelPreviewCompact';
 export { default as ChannelPreviewCountOnly } from './ChannelPreviewCountOnly';
 export { default as ChannelPreviewLastMessage } from './ChannelPreviewLastMessage';
 export { default as ChannelPreviewMessenger } from './ChannelPreviewMessenger';
+export * from './utils';