# v1.8.x - yyyy-mm-dd


## Changes affecting backward compatibility



## Standard library additions and changes

## `std/smtp`

- Sends `ehlo` first. If the mail server does not understand, it sends `helo` as a fallback.

## Language changes

- Pragma macros on type definitions can now return `nnkTypeSection` nodes as well as `nnkTypeDef`,
  allowing multiple type definitions to be injected in place of the original type definition.

  ```nim
  import macros

  macro multiply(amount: static int, s: untyped): untyped =
    let name = $s[0].basename
    result = newNimNode(nnkTypeSection)
    for i in 1 .. amount:
      result.add(newTree(nnkTypeDef, ident(name & $i), s[1], s[2]))

  type
    Foo = object
    Bar {.multiply: 3.} = object
      x, y, z: int
    Baz = object

  # becomes

  type
    Foo = object
    Bar1 = object
      x, y, z: int
    Bar2 = object
      x, y, z: int
    Bar3 = object
      x, y, z: int
    Baz = object
  ```

## Compiler changes

- `nim` can now compile version 1.4.0 as follows: `nim c --lib:lib --stylecheck:off compiler/nim`,
  without requiring `-d:nimVersion140` which is now a noop.


## Tool changes