releaser: Add relase notes to /docs for release of 0.22.1

[ci skip]

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+
+---
+date: 2017-06-13
+title: 0.22.1
+---
+
+       
+
+Hugo `0.22.1` fixes a couple of issues reported after the [0.22 release](https://github.com/spf13/hugo/releases/tag/v0.22) Monday. Most importantly a fix for detecting regular subfolders below the root-sections.
+
+Also, we forgot to adapt the `permalink settings` with support for nested sections, which made that feature less useful than it could be.
+
+With this release you can configure **permalinks with sections** like this:
+
+**First level only:**
+
+```toml
+[permalinks]
+blog = ":section/:title"
+```
+
+**Nested (all levels):**
+
+```toml
+[permalinks]
+blog = ":sections/:title"
+```
+## Fixes
+
+* Fix section logic for root folders with subfolders [a30023f5](https://github.com/spf13/hugo/commit/a30023f5cbafd06034807255181a5b7b17f3c25f) [@bep](https://github.com/bep) [#3586](https://github.com/spf13/hugo/issues/3586) 
+* Support sub-sections in permalink settings [1f26420d](https://github.com/spf13/hugo/commit/1f26420d392a5ab4c7b7fe1911c0268b45d01ab8) [@bep](https://github.com/bep) [#3580](https://github.com/spf13/hugo/issues/3580) 
+* Adjust rlimit to 64000 [ff54b6bd](https://github.com/spf13/hugo/commit/ff54b6bddcefab45339d8dc2b13776b92bdc04b9) [@bep](https://github.com/bep) [#3582](https://github.com/spf13/hugo/issues/3582) 
+* Make error on setting rlimit a warning only [629e1439](https://github.com/spf13/hugo/commit/629e1439e819a7118ae483381d4634f16d3474dd) [@bep](https://github.com/bep) [#3582](https://github.com/spf13/hugo/issues/3582) 
+* Revert: Remove the rlimit tweaking on macOS" [26aa06a3](https://github.com/spf13/hugo/commit/26aa06a3db57ab7134a900d641fa2976f7971520) [@bep](https://github.com/bep) [#3582](https://github.com/spf13/hugo/issues/3582) 
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