yarn: Update to 1.13.0.

## 1.13.0

- Implements a new `package.json` field: `peerDependenciesMeta`

  [6671](yarnpkg/yarn#6671) - [**Maël Nison**](https://twitter.com/arcanis)

- Adds an `optional` settings to `peerDependenciesMeta` to silence missing peer dependency warnings

  [6671](yarnpkg/yarn#6671) - [**Maël Nison**](https://twitter.com/arcanis)

- Implements `yarn policies set-version [range]`. Check [the documentation]() for usage & tips.

  [6673](yarnpkg/yarn#6673) - [**Maël Nison**](https://twitter.com/arcanis)

- Fixes a resolution issue when a package had an invalid `main` entry

  [6682](yarnpkg/yarn#6682) - [**Maël Nison**](https://twitter.com/arcanis)

- Decreases the size of the generated `$PATH` environment variable for a better Windows support

  [6683](yarnpkg/yarn#6683) - [**Rowan Lonsdale**](https://github.com/hWorblehat)

- Fixes postinstall scripts for third-party packages when they were referencing a binary from their own dependencies

  [6712](yarnpkg/yarn#6712) - [**Maël Nison**](https://twitter.com/arcanis)

- Fixes yarn audit exit code overflow

  [6748](yarnpkg/yarn#6748) - [**Andrey Vetlugin**](https://github.com/antrew)

- Stops automatically unplugging packages with postinstall script when running under `--ignore-scripts`

  [6820](yarnpkg/yarn#6820) - [**Maël Nison**](https://twitter.com/arcanis)

- Adds transparent support for the [`resolve`](https://github.com/browserify/resolve) package when using Plug'n'Play

  [6816](yarnpkg/yarn#6816) - [**Maël Nison**](https://twitter.com/arcanis)

- Properly reports the error codes when the npm registry throws 500's

  [6817](yarnpkg/yarn#6817) - [**Maël Nison**](https://twitter.com/arcanis)

devel/yarn/Makefile

@@ -1,6 +1,6 @@
-# $NetBSD: Makefile,v 1.3 2018/11/22 10:54:27 kleink Exp $
+# $NetBSD: Makefile,v 1.4 2019/01/17 16:35:14 kleink Exp $
 
-DISTNAME=	yarn-v1.12.3
+DISTNAME=	yarn-v1.13.0
 PKGNAME=	${DISTNAME:S/-v/-/}
 CATEGORIES=	devel
 MASTER_SITES=	https://yarnpkg.com/downloads/${PKGVERSION_NOREV}/

devel/yarn/distinfo

@@ -1,6 +1,6 @@
-$NetBSD: distinfo,v 1.3 2018/11/22 10:54:27 kleink Exp $
+$NetBSD: distinfo,v 1.4 2019/01/17 16:35:14 kleink Exp $
 
-SHA1 (yarn-v1.12.3.tar.gz) = fb4599bf1f8da01552bcc7e1571dfd4e53788203
-RMD160 (yarn-v1.12.3.tar.gz) = a4cfbdafba2ac4c38fbf0bec757ddc451b81616d
-SHA512 (yarn-v1.12.3.tar.gz) = f1fe6b58d0ef9210260b19a7f02d0bb0d58cc536159385462a2ab4b0807a1c66636994c7b06207f3b4949950d411dd96939e1ba8aa1495b55681014242146457
-Size (yarn-v1.12.3.tar.gz) = 1166553 bytes
+SHA1 (yarn-v1.13.0.tar.gz) = affa9c956739548024068532a902cf18c9cb523f
+RMD160 (yarn-v1.13.0.tar.gz) = 057902768270204a114bd01a7a15220f27ff245d
+SHA512 (yarn-v1.13.0.tar.gz) = 5277f0d9e79fbfc8a6b7864c3e1bc554fe38582cf7f21b83c641ecf98aabc78c014caef94ebd26877578ae1fb6370e6242ad2b70cfd569fa2d099a3da936f90c
+Size (yarn-v1.13.0.tar.gz) = 1169613 bytes