Mercator 0.3.1

Salvete mercatores,

Mercator 0.3.1 is released. See the changelog below:

• Updated to Bevy 0.15
• The game should require ~30% less memory to run, and should run faster on most devices.
• Updated the title screen
• Updated the dialogue UI
• Info pop-ups now stack on the bottom-left side of the screen
• The map texture has been updated
• New merchants should no longer be somewhat broken when you acquire them
• Added the "Templum Augusti" to Muziris
• Customers no longer sell more than a handful of count-based items, unless they are currency