+* The mw.loader.addSource() is now considered a private method, and no longer
+ supports the `id, url` signature. Use the `Object` parameter instead.
+* Several collations were removed. They were workarounds for bugs in the ICU
+ library and they are no longer needed (as of ICU 57.1):
+ * 'uppercase-se' (NorthernSamiUppercaseCollation) - use 'uca-se' instead
+ * 'xx-uca-et' (CollationEt) - use 'uca-et' instead
+ * 'xx-uca-fa' (CollationFa) - use 'uca-fa' instead