Fixes #114; Allow flattening options in objects #409

Job	Run time
build / linux-amd64 (Nim version-2-0)	4m 31s
build / linux-amd64 (Nim version-1-6)	2m 30s
build / linux-amd64 (Nim version-2-2)	4m 15s
build / linux-gcc-14-amd64 (Nim version-1-6)	2m 45s
build / linux-amd64 (Nim devel)	5m 6s
build / linux-gcc-14-amd64 (Nim version-2-0)	4m 17s
build / macos-amd64 (Nim version-1-6)	3m 50s
build / windows-amd64 (Nim version-1-6)	4m 36s
build / linux-i386 (Nim devel)	5m 47s
build / macos-amd64 (Nim version-2-0)	7m 19s
build / macos-amd64 (Nim version-2-2)	12m 37s
build / linux-gcc-14-amd64 (Nim devel)	5m 11s
build / macos-amd64 (Nim devel)	6m 59s
build / linux-i386 (Nim version-2-2)	5m 7s
build / windows-amd64 (Nim version-2-0)	6m 58s
build / macos-arm64 (Nim version-1-6)	2m 57s
build / macos-arm64 (Nim devel)	4m 37s
build / linux-gcc-14-amd64 (Nim version-2-2)	9m 42s
build / linux-i386 (Nim version-1-6)	3m 8s
build / linux-i386 (Nim version-2-0)	5m 5s
build / macos-arm64 (Nim version-2-2)	3m 53s
build / macos-arm64 (Nim version-2-0)	5m 8s
build / windows-amd64 (Nim devel)	7m 30s
build / windows-amd64 (Nim version-2-2)	6m 29s
	2h 10m 17s

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