Expose `pub(crate) fn new` constructors for value types #387

Job	Run time
Typos	5s
Typos	1m 6s
LLVM ${{ matrix.llvm-version[0] }}: ${{ matrix.os }}	0s
Documentation	0s
Documentation	0s
LLVM 4.0: ubuntu-20.04	36s
LLVM 5.0: ubuntu-20.04	37s
LLVM 6.0: ubuntu-20.04	31s
LLVM 7.0: ubuntu-20.04	43s
LLVM 8.0: ubuntu-20.04	37s
LLVM 9.0: ubuntu-20.04	35s
LLVM 10.0: ubuntu-20.04	46s
LLVM 11.0: ubuntu-20.04	45s
LLVM 12.0: ubuntu-20.04	44s
LLVM 13.0: ubuntu-20.04	36s
LLVM 14.0: ubuntu-20.04	34s
LLVM 15.0: ubuntu-20.04	35s
LLVM 16.0: ubuntu-22.04	34s
	9m 24s

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