Version 1.7.2 released

This is a maintenance update with a few fixes.

MISC

• Added toggle-able announcement panel on top right of title screen.

FIXES

• Improved description of Completion milestones to clarify that you need all 30 of them.
• Fixed issue that would allow plants to be placed in bridges.
• Fixed code issues in warning signs.
• Various fixes for rare crashes.
• Better error messages for some modding errors.

LOCALIZATION FIXES

• Fixed typo in Spanish translation of Deep Mining tech.
• Fixed typo in the French text for "Extractable resources"