Better guard if the library is undefined.
Add the `hoa core:status` command.

Get status of a library.
[auto] Merge from Core

    • #9e85e3b — Better guard if the library is undefined. (Ivan Enderlin, 2014-02-10)
    • #0e5963a — Add the `hoa core:status` command. (Ivan Enderlin, 2014-02-10)

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Merge branch 'master' of /var/lib/git/repositories/Library/Core