Add function into_inner to Easy and Easy2 (#586) #551

Job	Run time
Publish Documentation	2m 2s
Rustfmt	13s
Test (x86_64)	2m 40s
Test (i686)	2m 52s
Test (x86_64-musl)	6m 5s
Test (mingw)	2m 38s
Test (system-curl)	2m 22s
Test (openssl-110)	3m 23s
Test (x86_64-beta)	2m 46s
Test (x86_64-nightly)	2m 56s
Test (macos)	1m 48s
Test (win64)	7m 53s
Test (win32)	6m 48s
Test (ubuntu-lts, ubuntu-24.04, 1.75, linux64, x86_64-unknown-linux-gnu)	2m 24s
	46m 50s

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