Merge pull request #105 from kwvg/bump_1.3.4 #404

Job	Run time
macos-latest, cmake, gcc, easy backend	52s
macos-latest, cmake, gcc, gmp backend	49s
macos-latest, cmake, clang, easy backend	39s
macos-latest, cmake, clang, gmp backend	30s
macos-latest, autotools, gcc, easy backend	1m 0s
macos-latest, autotools, gcc, gmp backend	1m 13s
macos-latest, autotools, clang, easy backend	1m 11s
macos-latest, autotools, clang, gmp backend	1m 20s
ubuntu-20.04, cmake, gcc, easy backend	1m 26s
ubuntu-20.04, cmake, gcc, gmp backend	1m 28s
ubuntu-20.04, cmake, clang, easy backend	1m 50s
ubuntu-20.04, cmake, clang, gmp backend	1m 28s
ubuntu-20.04, autotools, gcc, easy backend	2m 14s
ubuntu-20.04, autotools, gcc, gmp backend	2m 4s
ubuntu-20.04, autotools, clang, easy backend	2m 10s
ubuntu-20.04, autotools, clang, gmp backend	2m 15s
	22m 29s

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