[RFC] Define proper semantics for range() function

UPGRADING

@@ -52,6 +52,27 @@ PHP 8.3 UPGRADE NOTES
   . C functions that have a return type of void now return null instead of
     returning the following object object(FFI\CData:void) { }
 
+- Standard:
+  . The range() function has had various changes:
+    * A TypeError is now thrown when passing objects, resources, or arrays
+      as the boundary inputs
+    * A more descriptive ValueError is thrown when passing 0 for $step
+    * A ValueError is now thrown when using a negative $step for increasing ranges
+    * If $step is a float that can be interpreted as an int, it is now done so
+    * A ValueError is now thrown if any argument is infinity or NAN
+    * An E_WARNING is now emitted if $start or $end is the empty string.
+      The value continues to be cast to the value 0.
+    * An E_WARNING is now emitted if $start or $end has more than one byte,
+      only if it is a non-numeric string.
+    * An E_WARNING is now emitted if $start or $end is cast to an integer
+      because the other boundary input is a number. (e.g. range(5, 'z');)
+    * An E_WARNING is now emitted if $step is a float when trying to generate
+      a range of characters, except if both boundary inputs are numeric strings
+      (e.g. range('5', '9', 0.5); does not produce a warning)
+    * range() now produce a list of characters if one of the boundary inputs is
+      a string digit instead of casting the other input to int
+      (e.g. range('5', 'z');)
+
 ========================================
 2. New Features
 ========================================
@@ -113,7 +134,7 @@ PHP 8.3 UPGRADE NOTES
   . Changed DOMCharacterData::appendData() tentative return type to true.
 
 - Intl:
-  . datefmt_set_timezone (and its alias IntlDateformatter::setTimeZone) 
+  . datefmt_set_timezone (and its alias IntlDateformatter::setTimeZone)
     now returns true on success, previously null was returned.
   . IntlBreakiterator::setText() now returns false on failure, previously
     null was returned.