Very nice. Just a few tweaks... Rated 4 out of 5 stars

Very nice. Does just what it says and nicely configurable.

I'm holding back on the fifth star because there are a few little details I'd like to see added.
I don't see a forum for 'em, so I'll list them here:

(1) In "Options" window, please add an "Apply" button to effect the change without closing the window.

(2) When picking a date, allow a quick way to change the year.
Suggestion: Allow to highlight either the month or the year; arrows advance/reverse according to selected field. Default is Month, of course.
Better still, perhaps also: Click on top-line month to open a pull-down menu of months (instead of typing month), and make year writeable

(3) Some more convenience when specifying format:
(a) At least leave the Format bar writeable while the "Help" guide is up.
(b) Better still: When the cursor is in one of the Format bars, allow a selection of one of the Formatting Options to enter that Option into the Format Bar.

(4) Open/Close Calendar Display behavior:
Currently, the first click on status-bar pane opens display, second click causes display to minimize to Windows TaskBar, third click does nothing.
I recommend that the second click should simply close display.

(5) Convenient way to return to "Today".
I recommend: Replace the redundundandant "OK" button (which unexpectedly closes the display) with a "Today" (which would be inactive while the date shown is the current date) button.

Okay, that's my list. Nice handy utility, just a few tweaks shy of perfection.

This review is for a previous version of the add-on (2.0.63).