1.3.0

Add dots on graph only on grade changes.

1.2.1

Fix time deltas on x-axis of charts. #11

1.2.0

Resized grades charts to fit user's screen.
Users can now re-enter their credentials if they change them.

1.1.5

Change extension title.

1.1.4

Minor popup changes.

1.1.3

Add source code links to popup.

1.1.2

Open links in new tab from popup.

1.1.1

Add grades graphing instructions to popup.

1.1.0

Changed extension icon.

1.0.0

Fixed white image (#3)