* Use faster stringbuilder for card token formatting instead of full-blown formatter.
* When SN/RN/PN and similar placeholders are expanded, calculate the replacement
value only if the placeholder is present in the string.
In a test with some random games:
55.4M times replaceName was called
39.2M times SN was present
2.0M times PN was present
0.2M times RN was present
0.2M times X was present
* Generate event description on demand, instead on event construction.
In a test with some random games:
71.601M times description is generated
0.258M time it is actually read or used
By postponing generating the description to a point when it is actually needed,
CPU time spent when going through possible actions is reduced to about 80%,
so in given amount of time, MMAB AI and similar
is able to examine larger part of the possible game states.
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