v0.6.1

Upgraded to React 0.13.

v0.6

Ditched and deprecated PlainEditable - now using input and react-textarea-autosize, which was all the app ever really needed.

Added confirmation when deleting sections.

v0.5: Update to PlainEditable 2.0.0

Breaking change: Updated PlainEditable to version 2.0.0 - now uses plain text for storage.

Placeholder values are now displayed any time an editable value becomes blank, not just initially.

v0.4

## headings now win if both supported heading types are detected when
importing a file.

Added export to an IDEAS.md file - defaults to exporting ## headings, but will
export headings matching the format used in the last file import.

Fixed trimming of whitespace when importing.

Switched to centred layout.

Fixed drag and drop import in IE11.

Automatically give focus to the names of newly-created sections.

v0.3

Added importing ideas by dragging and dropping a Markdown file.

The following types of headings will become section names:

## 2 Hash Heading

Underline Equals Heading
========================

Fixed using the spacebar to use buttons.

v0.2: Extracted ContentEditable in react-plain-editable's

Extracted ContentEditable component out into react-plain-editable.