Update README.md

README.md

@@ -13,34 +13,34 @@ As Haxe evolved and some of the functionality has been integrated/reimplemented/
 
 The library is build on top of the haxe macro API and `tink_core`, having three major parts:
 
-<!-- START INDEX -->
-- [Macro API](#macro-api)
-	- 
-		- [Expression Tools](#expression-tools)
-			- [Basic Helpers](#basic-helpers)
-			- [Extracting Constants](#extracting-constants)
-			- [Shortcuts](#shortcuts)
-			- [Type Inspection](#type-inspection)
-			- [Advanced Transformations](#advanced-transformations)
-		- [Position Tools](#position-tools)
-		- [Type Tools](#type-tools)
-		- [Function Tools](#function-tools)
-		- [Operation Tools](#operation-tools)
-		- [Metadata Tools](#metadata-tools)
-- [Build Infrastructure](#build-infrastructure)
-	- [Member](#member)
-	- [ClassBuilder](#classbuilder)
-	- [Constructor](#constructor)
-		- [Creation](#creation)
-		- [Visibility](#visibility)
-		- [Initial Super Call](#initial-super-call)
-		- [Simple Modifications](#simple-modifications)
-		- [Field Initialization](#field-initialization)
-			- [Setter Bypass](#setter-bypass)
-			- [Initialization Options](#initialization-options)
-		- [Expression Level Transformation](#expression-level-transformation)
-- [TypeMap](#typemap)
-
+<!-- START INDEX -->
+- [Macro API](#macro-api)
+	- 
+		- [Expression Tools](#expression-tools)
+			- [Basic Helpers](#basic-helpers)
+			- [Extracting Constants](#extracting-constants)
+			- [Shortcuts](#shortcuts)
+			- [Type Inspection](#type-inspection)
+			- [Advanced Transformations](#advanced-transformations)
+		- [Position Tools](#position-tools)
+		- [Type Tools](#type-tools)
+		- [Function Tools](#function-tools)
+		- [Operation Tools](#operation-tools)
+		- [Metadata Tools](#metadata-tools)
+- [Build Infrastructure](#build-infrastructure)
+	- [Member](#member)
+	- [ClassBuilder](#classbuilder)
+	- [Constructor](#constructor)
+		- [Creation](#creation)
+		- [Visibility](#visibility)
+		- [Initial Super Call](#initial-super-call)
+		- [Simple Modifications](#simple-modifications)
+		- [Field Initialization](#field-initialization)
+			- [Setter Bypass](#setter-bypass)
+			- [Initialization Options](#initialization-options)
+		- [Expression Level Transformation](#expression-level-transformation)
+- [TypeMap](#typemap)
+
 <!-- END INDEX -->
 
 # Macro API
@@ -64,6 +64,8 @@ Rejects an expression and displays a generic or custom error message
 Converts an expression into the corresponding Haxe source code
 - `log(e:Expr, ?pos:Position):Expr`  
 Traces the string representation of an expression and returns it.
+- `concat(e1:Expr, e2:Expr):Expr`
+Concats two expressions into a block. If either sub-expression is a block itself, it gets flattened into the resulting block.
 
 #### Extracting Constants