Add 'utils' module export (#410)

Export core utils and assets used by RWP in /utils.
Add serviceWorkerActivated() utility promise.

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Co-authored-by: emma <hi@emma.cafe>

CHANGES.md

@@ -2,16 +2,24 @@
 
 ## CHANGES
 
+v2.3.4
+
+- API: Add utils module for basic utility function exports
+- Loading: Update to wabac.js (2.22.2), includes fixes to MultiWACZ loading
+
 v2.3.3
+
 - UI: Support custom 'downloadUrl' when loading from Multi-WACZ JSON source - don't show download if unset
 - UI: Don't show 'Archive Info' menu option for Multi-WACZ JSON source in embed mode
 - UI: Use localized data format for current language settings
 - Loading: Use negative offset range requests (via wabac.js 2.21.3)
 
 v2.3.2
+
 - Loading: fix dynamic page lookup for URLs with query strings (via wabac.js 2.21.2)
 
 v2.3.1
+
 - Loading: additional loading optimizations, bump wabac.js to 2.21.1
 
 v2.3.0