Because
Exec #1: Item six on the agenda: "The Meaning of Life" Now uh, Harry, you've had some thoughts on this.
Exec #2: Yeah, I've had a team working on this over the past few weeks, and what we've come up with can be reduced to two fundamental concepts. One: People aren't wearing enough hats. Two: Matter is energy. In the universe there are many energy fields which we cannot normally perceive. Some energies have a spiritual source which act upon a person's soul. However, this "soul" does not exist ab initio as orthodox Christianity teaches; it has to be brought into existence by a process of guided self-observation. However, this is rarely achieved owing to man's unique ability to be distracted from spiritual matters by everyday trivia.
Exec #3: What was that about hats again?
Exec #2: Oh, Uh... people aren't wearing enough.
Exec #1: Is this true?
Exec #4: Certainly. Hat sales have increased but not pari passu, as our research...
Exec #3: [Interrupting] "Not wearing enough"? enough for what purpose?
Exec #5: Can I just ask, with reference to your second point, when you say souls don't develop because people become distracted...
Just install using the plugin installer. Done. You now get daily/monthly hats for your QGIS logo.
It's pretty much a win win for you, QGIS, and hats all around the world.
Create a png file in SoManyHats using the following format:
{month}-{day}.png
or just {month}.png if it's to conver a full month.
Here is a easy example:
Send me your PRs! You know you want to!