Fix on the fix since the scope was incorrect.

Fix on the subject-getting-modern-tech event.

Bombing event made twice and frequent and more deadly.
If you've solved all your initial problems as a modern tech country, the subject Time Travellers/Panzerholics now also get modern technology.
The AI can now modernize again, now without having to spend money so they pose an interesting opponent.

Pruned some old files and updated for 1.31.6.

Added a decision to greatly improve defensiveness in the current capital at the cost of a lot of money.
Fixed a typo in the tank related decisions.

Re-added concrete/cement research decision that lowers building time and cost upon completion.

Nationalism and Imperialism now available as CBs to modern tech nations upon age of Absolutism and beyond.
A few initial modifiers changed such that the army is slightly less strong.
Province defense improved through more hostile attrition and larger garrisons.

Fixed a few decisions that should have disappeared upon clicking.
Reduced some late-tech unit pips to be more in line with the corresponding units of different types, as well as those before and after them.

Fixed a typo in a localization name of a galley.
Fixed an incorrect condition in the "Ironclad" event.

Fixed a typo in the definition of the Gensokyan Impulse Infantry.