Text component children + fix nbt serialization for sequences of maps… #1267

Job	Run time
Build project and test (ubuntu-latest, stable)	2m 59s
Run lints (stable)	2m 4s
Build project and test (windows-latest, stable)	7m 4s
Build project in release (ubuntu-latest, stable)	2m 25s
Build project in release (windows-latest, stable)	4m 7s
Build project and test (macos-latest, stable)	2m 43s
Build project in release (macos-latest, stable)	2m 19s
Run lints in release mode (stable)	1m 1s
Check formatting (stable)	14s
	24m 56s

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