releaser: Add relase notes for release of 0.20.4

[ci skip]

Author: bep

docs/content/release-notes/0.20.4-relnotes.md

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+---
+date: 2017-04-24
+title: 0.20.4
+---
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+	
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+This is the second bug-fix relase of the day, fixing a couple of issues related to the new release scripts.
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+Hugo now has:
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+* 16626+ [stars](https://github.com/spf13/hugo/stargazers)
+* 457+ [contributors](https://github.com/spf13/hugo/graphs/contributors)
+* 156+ [themes](http://themes.gohugo.io/)
+
+
+* Fix statically linked binaries [275bcf56](https://github.com/spf13/hugo/commit/275bcf566c7cb72367d4423cf4810319311ff680) [@munnerz](https://github.com/munnerz) [#3382](https://github.com/spf13/hugo/issues/3382) 
+* Filename change in Hugo 0.20.3 binaries [\](https://github.com/spf13/hugo/issues/3385)
+* Fix version calculation [cb3c6b6f](https://github.com/spf13/hugo/commit/cb3c6b6f7670f85189a4a3637e7132901d1ed6e9) [@bep](https://github.com/bep) 
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docs/temp/0.20.4-relnotes.md

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+
+
+This is the second bug-fix relase of the day, fixing a couple of issues related to the new release scripts.
+
+
+Hugo now has:
+
+* 16626+ [stars](https://github.com/spf13/hugo/stargazers)
+* 457+ [contributors](https://github.com/spf13/hugo/graphs/contributors)
+* 156+ [themes](http://themes.gohugo.io/)
+
+
+* Fix statically linked binaries [275bcf56](https://github.com/spf13/hugo/commit/275bcf566c7cb72367d4423cf4810319311ff680) [@munnerz](https://github.com/munnerz) [#3382](https://github.com/spf13/hugo/issues/3382) 
+* Filename change in Hugo 0.20.3 binaries [\](https://github.com/spf13/hugo/issues/3385)
+* Fix version calculation [cb3c6b6f](https://github.com/spf13/hugo/commit/cb3c6b6f7670f85189a4a3637e7132901d1ed6e9) [@bep](https://github.com/bep) 
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