Update [DRAFT] AerScript Specification Aer#19 standard

%5BDRAFT%5D-AerScript-Specification---Aer%2319-standard.md

@@ -104,7 +104,7 @@ There are several kinds of operators and punctuators. Operators are used in expr
 &&   ||   !     &   ^    ^^    |
 ~    .    <<   >>   ,    ::    (
 )    [    ]     {   }    ->    :
-?    =>
+?    =>   **
 
 #### X.Y.Z Identifiers
 
@@ -347,21 +347,23 @@ When an expression contains multiple operators, the precedence of the operators
 | 3          | increment / decrement | ++ --            | non-associative   |
 | 4          | unary operators       | - + ~ !          | right-associative |
 | 4          | cast operators        | (typedef)        | right-associative |
-| 7          | object-related        | instanceof       | non-associative   |
+| 5          | object-related        | is                      | non-associative   |
+| 6          | arithmetic operators  | **                | right-associative  |
 | 7          | arithmetic operators  | * / %            | left-associative  |
 | 8          | arithmetic operators  | + -              | left-associative  |
 | 9          | bitwise operators     | << >>            | left-associative  |
 | 10         | comparison            | < <= > >=        | non-associative   |
-| 11         | comparison            | == != === !==    | non-associative   |
+| 11         | comparison            | == !=            | non-associative   |
 | 12         | bitwise and           | &                | left-associative  |
-| 12         | reference operator    | =&               | left-associative  |
 | 13         | bitwise xor           | ^                | left-associative  |
 | 14         | bitwise or            | \|               | left-associative  |
 | 15         | logical and           | &&               | left-associative  |
 | 16         | logical xor           | ^^               | left-associative  |
 | 17         | logical or            | \|\|             | left-associative  |
-| 18         | ternary operator      | ? :              | left-associative  |
-| 19         | assignment operators  | = += -= *= /= %= | right-associative |
+| 18         |  NULL coalescing    | ??            | right-associative  |
+| 19         | ternary operator      | ? :              | left-associative  |
+| 20         | assignment operators  | = += -= *= /= %= **= | right-associative |
+| 20         | assignment operators  | &= \|= ^= <<= >>=     | right associative |
 | 23         | comma operator        | ,                | left-associative  |
 
 ### 6.2. Associativity Rule
@@ -383,6 +385,7 @@ Aer offers the following arithmetic operators:
  * Multiplication: *
  * Division: /
  * Modulo: %
+ * Exponentation: **
 
 ### 6.5. Concatenating Strings
 In Aer concatenating strings is nothing more than adding strings to each other with the addition operator.
@@ -400,7 +403,6 @@ Relational operators are used to compare values. These operators always result i
  * greater than or equal to: >=
  * equal to: ==
  * not equal to: !=
- * identical: ===
  * not identical: !==
 
 ### 6.8. Bitwise Operators