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 # After mruby 3.0
 
 * multi-precision integer
-* WORD_BOXING: Pack some floats in `mrb_value`
 * NAN_BOXING: Allow `MRB_INT64` along with NaN boxing
 * keyword arguments à la Ruby3.0 (update `OP_SEND`)
 * parser and code generator independent from `mrb_state` (picoruby?)
+* variable sized AST node
 
 # Things to do (Things that are not done yet)
 
 * `begin ... end while cond` to behave as CRuby
 * special variables ($1,$2..)
-* super in aliased methods