CHANGELOG.md in vagrant-parallels-1.7.2 vs CHANGELOG.md in vagrant-parallels-1.7.3

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+ new

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+## 1.7.3 (February 28, 2017)
+BUG FIXES:
+  - Fix exceptions related to `nokogiri` gem. 
+  [[GH-291](https://github.com/Parallels/vagrant-parallels/issues/291)],
+  [[GH-292](https://github.com/Parallels/vagrant-parallels/issues/292)]
+
 ## 1.7.2 (December 16, 2016)
 BUG FIXES:
   - Fix Parallels Tools update in Linux guests. Call `ptiagent-cmd` with `--install`,
   not `--info`. [[GH-286](https://github.com/Parallels/vagrant-parallels/pull/286)]
 
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