added operateOn to sugar.nim to give Nim the chaining mechanism it de… (#13092)

* implemented the with stdlib module as specified in https://github.com/nim-lang/RFCs/issues/193
* change sugar.outplace to sugar.dup according to https://github.com/nim-lang/RFCs/issues/193
* changelog update

changelog.md

@@ -52,7 +52,7 @@
   `CountTable.pop`, `Table.pop`
 - To `strtabs.nim`, added `StringTable.clear` overload that reuses the existing mode.
 - Added `browsers.osOpen` const alias for the operating system specific *"open"* command.
-- Added `sugar.outplace` for turning in-place algorithms like `sort` and `shuffle` into
+- Added `sugar.dup` for turning in-place algorithms like `sort` and `shuffle` into
   operations that work on a copy of the data and return the mutated copy. As the existing
   `sorted` does.
 - Added `sugar.collect` that does comprehension for seq/set/table collections.
@@ -71,6 +71,18 @@
 - Added `resetOutputFormatters` to `unittest`
 
 
+- Added a `with` macro for easy function chaining that's available
+  everywhere, there is no need to concern your APIs with returning the first argument
+  to enable "chaining", instead use the dedicated macro `with` that
+  was designed for it. For example:
+
+```nim
+
+
+
+```
+
+
 ## Library changes
 
 - `asynchttpserver` added an iterator that allows the request body to be read in