## v0.20.0 - XX/XX/2018

### Changes affecting backwards compatibility

- The ``isLower``, ``isUpper`` family of procs in strutils/unicode
  operating on **strings** have been
  deprecated since it was unclear what these do. Note that the much more
  useful procs that operator on ``char`` or ``Rune`` are not affected.

- `strutils.editDistance` has been deprecated,
  use `editdistance.editDistance` or `editdistance.editDistanceAscii`
  instead.

- The OpenMP parallel iterator \``||`\` now supports any `#pragma omp directives`
  and not just `#pragma omp parallel for`. See
  [OpenMP documentation](https://www.openmp.org/wp-content/uploads/OpenMP-4.5-1115-CPP-web.pdf).

  The default annotation is `parallel for`, if you used OpenMP without annotation
  the change is transparent, if you used annotations you will have to prefix
  your previous annotations with `parallel for`.

- The `unchecked` pragma was removed, instead use `system.UncheckedArray`.
- The undocumented ``#? strongSpaces`` parsing mode has been removed.
- The `not` operator is now always a unary operator, this means that code like
  ``assert not isFalse(3)`` compiles.


#### Breaking changes in the standard library


#### Breaking changes in the compiler

- The compiler now implements the "generic symbol prepass" for `when` statements
  in generics, see bug #8603. This means that code like this does not compile
  anymore:

```nim
proc enumToString*(enums: openArray[enum]): string =
  # typo: 'e' instead 'enums'
  when e.low.ord >= 0 and e.high.ord < 256:
    result = newString(enums.len)
  else:
    result = newString(enums.len * 2)
```

### Library additions

- There is a new stdlib module `editdistance` as a replacement for the
  deprecated `strutils.editDistance`.

- Added `split`, `splitWhitespace`, `size`, `alignLeft`, `align`,
  `strip`, `repeat` procs and iterators to `unicode.nim`.

- Added `or` for `NimNode` in `macros`.

- Added `system.typeof` for more control over how `type` expressions
  can be deduced.

### Library changes

- The string output of `macros.lispRepr` proc has been tweaked
  slightly. The `dumpLisp` macro in this module now outputs an
  indented proper Lisp, devoid of commas.

- In `strutils` empty strings now no longer matched as substrings
  anymore.

- Complex type is now generic and not a tuple anymore.

### Language additions

- Vm suport for float32<->int32 and float64<->int64 casts was added.


### Language changes


### Tool changes
- `jsondoc` now include a `moduleDescription` field with the module
  description. `jsondoc0` shows comments as it's own objects as shown in the
  documentation.

### Compiler changes

### Bugfixes