Changelog and adding the name to the doc

Changelog.md

@@ -5,6 +5,7 @@ Language Features:
 
 Compiler Features:
  * Low-Level Inliner: Inline ordinary jumps to small blocks and jumps to small blocks that terminate.
+ * Yul Optimizer: Added a new step FunctionSpecializer, that specializes a function with its literal arguments.
 
 
 Bugfixes:

docs/yul.rst

@@ -1125,6 +1125,7 @@ Abbreviation Full name
 ``i``        ``FullInliner``
 ``g``        ``FunctionGrouper``
 ``h``        ``FunctionHoister``
+``F``        ``FunctionSpecializer``
 ``T``        ``LiteralRematerialiser``
 ``L``        ``LoadResolver``
 ``M``        ``LoopInvariantCodeMotion``