workbook: add set_size() method #214

Job	Run time
Cmake (gcc)	52s
Cmake (gcc, -DBUILD_EXAMPLES=ON -DBUILD_TESTS=ON)	58s
Cmake (gcc, -DUSE_DTOA_LIBRARY=ON -DBUILD_TESTS=ON)	54s
Cmake (gcc, -DUSE_MEM_FILE=ON -DBUILD_TESTS=ON)	18s
Cmake (gcc, -DUSE_NO_MD5=ON -DBUILD_TESTS=ON)	53s
Cmake (gcc, -DUSE_OPENSSL_MD5=ON -DBUILD_TESTS=ON)	1m 6s
Cmake (gcc, -DUSE_STANDARD_TMPFILE=ON -DBUILD_TESTS=ON)	57s
Cmake (gcc, -DUSE_SYSTEM_MINIZIP=ON -DBUILD_TESTS=ON)	1m 0s
Cmake (gcc, -DUSE_SYSTEM_MINIZIP=ON -DUSE_OPENSSL_MD5=ON -DBUILD_TESTS=ON)	1m 5s
Cmake (clang)	1m 0s
Cmake (clang, -DBUILD_EXAMPLES=ON -DBUILD_TESTS=ON)	1m 1s
Cmake (clang, -DUSE_DTOA_LIBRARY=ON -DBUILD_TESTS=ON)	1m 0s
Cmake (clang, -DUSE_MEM_FILE=ON -DBUILD_TESTS=ON)	21s
Cmake (clang, -DUSE_NO_MD5=ON -DBUILD_TESTS=ON)	1m 0s
Cmake (clang, -DUSE_OPENSSL_MD5=ON -DBUILD_TESTS=ON)	1m 38s
Cmake (clang, -DUSE_STANDARD_TMPFILE=ON -DBUILD_TESTS=ON)	1m 28s
Cmake (clang, -DUSE_SYSTEM_MINIZIP=ON -DBUILD_TESTS=ON)	1m 6s
Cmake (clang, -DUSE_SYSTEM_MINIZIP=ON -DUSE_OPENSSL_MD5=ON -DBUILD_TESTS=ON)	1m 24s
	18m 1s

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