Feature Request: Save cursor position

[Scribe Origins]

Something that TextWrangler on OSX does well is remember the cursor position (line:column) for every document, including when opened after a shutdown. 

Scenario: sometimes I'll be viewing work outside of PlainText, and iOS will shut down PlainText to recover ram, and can't resume in PlainText where I left off.

Other than that, I love the app.

Cheers,

Henry