update CHANGELOG

2014-08-06 10:28:10 -07:00 · 2014-08-06 10:28:10 -07:00 · 5db74bde10
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 ## 1.6.4 (unreleased)

+BACKWARDS INCOMPATIBILITIES:
+
+  - providers/virtualbox: Host IO cache is no longer enabled by default
+      since it causes stale file issues. Please enable manually if you
+      require this. [GH-3934]
+
 IMPROVEMENTS:

  - core: Added `config.vm.box_server_url` setting to point at a