- Int.toChar was left non-deprecated because the replacement is not intrinsic yet.
- Number.toChar was left non-deprecated because otherwise the deprecation propagates to the override, Int.toChar.
KT-23451
- Step 1: add failing tests
- Step 2: fix common case insensitive Char.equals
- Step 3: fix case insensitive String.equals in K/JS
- Step 4: enable unicode case folding in K/JS Regexes and
string replacement (KT-45928)
- Step 5: fix case insensitive char comparison in K/N in String functions
String.replace, equals, compareTo with ignoreCase