Bump copyright year and make easier to bump #356

Job	Run time
cppcheck	17m 55s
code formatting check	18s
min features with gcc	2m 5s
min features with g++	1m 55s
min features with clang	2m 32s
max features with gcc	3m 14s
max features with g++	2m 50s
max features with clang	4m 44s
max features with gcc and DEBUG	3m 14s
max features with gcc for 32-bit arch (legacy OS)	1m 49s
max features with g++ for 32-bit arch (legacy OS)	2m 2s
max features with clang for 32-bit arch (legacy OS)	1m 54s
	44m 32s

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