Update API: documented with jsr305 nullability annotations
Experimental API:
xland.games2023.game24.plugin.api.AsyncPlayerGame24ResultEventxland.games2023.game24.plugin.api.AsyncPlayerGame24StartEventxland.games2023.game24.plugin.api.Game24API#isResolvable
Fixes: X is not treated as 10 like K treated as 13.
Fixed the issue where the "no solution" string was treated as an expression in cases where a solution existed.
SHA256 for 1.0.3: defd588685d61cc6b1677f49f565609f8fe7088bf3976c5e4c95ee5fd119497c
