Bump version to v2.0.0-rc10 #300

Job	Run time
aarch64-unknown-linux-gnu	3m 16s
aarch64-unknown-linux-musl	3m 11s
x86_64-unknown-linux-gnu	1m 41s
x86_64-unknown-linux-musl	3m 1s
arm-unknown-linux-gnueabi	2m 58s
arm-unknown-linux-gnueabihf	2m 58s
armv7-unknown-linux-gnueabihf	3m 4s
powerpc-unknown-linux-gnu	3m 2s
powerpc64-unknown-linux-gnu	3m 4s
powerpc64le-unknown-linux-gnu	2m 58s
s390x-unknown-linux-gnu	3m 36s
aarch64-apple-darwin	2m 20s
x86_64-apple-darwin	2m 56s
x86_64-pc-windows-msvc	5m 22s
aarch64-pc-windows-msvc	3m 28s
publish	56s
	47m 51s

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