See spec at https://gist.github.com/latkin/cba4187a99db9747d0bf
closes #225

commit b8ea6f617f32e44f29a22afd7aa4f2d09bb1a091
Author: latkin <latkin@microsoft.com>
Date:   Tue Feb 24 17:12:04 2015 -0800

    Touch-ups after rebase

commit 26ff24562bfb49de79c44342105f2946898c2f1e
Author: latkin <latkin@microsoft.com>
Date:   Wed Feb 18 12:54:36 2015 -0800

    Add capability to auto-break on first executable line

commit 675a27298d687cb8c3240af64069cc22accefe02
Author: latkin <latkin@microsoft.com>
Date:   Wed Feb 18 12:53:27 2015 -0800

    Change menu text, use more sensible hotkeys

commit ab73f78ca8bfc4b433152aa3e173fc22b74786a0
Author: latkin <latkin@microsoft.com>
Date:   Wed Feb 18 12:52:39 2015 -0800

    Small whitespace alignment

commit f551344b09fdfb94bfd813100d6065032bd92520
Author: latkin <latkin@microsoft.com>
Date:   Thu Feb 12 19:29:16 2015 -0800

    Output symbol info for locals

commit d6a0faac99bd33fec0c4be24d13009127b8ff420
Author: latkin <latkin@microsoft.com>
Date:   Thu Feb 12 18:00:14 2015 -0800

    Use same whitespace style as existing code

commit a4003c17a006d7eeda1c3920ad05aef788db846e
Author: latkin <latkin@microsoft.com>
Date:   Wed Feb 11 11:06:22 2015 -0800

    Add 'detach' item for tool window, and give 'attach'/'detach' smart visibility

commit c5a64605aca53cdfd742975225c8fa4e665b9f84
Author: latkin <latkin@microsoft.com>
Date:   Wed Feb 11 07:39:34 2015 -0800

    Enable basic script debugging