Decoding speedups #1881

Job	Run time
build (ubuntu-latest)	2m 58s
java_matrix	4s
download_test_data	4s
build (macos-latest)	2m 30s
unit_tests (25)	2m 49s
unit_tests (21)	3m 21s
dependency_analysis	1m 23s
spotbugs	6m 51s
test_run-groovy	53s
test_decoder	2m 33s
test_clara	7m 6s
test_coatjava (ubuntu-latest, kpp)	2m 49s
test_coatjava (macos-latest, eb-ep, ./run-eb-tests.sh -100 electronproton)	3m 31s
test_coatjava (ubuntu-latest, eb-eftpi)	2m 18s
test_coatjava (ubuntu-latest, eb-enc)	1m 56s
test_coatjava (ubuntu-latest, eb-ep)	2m 31s
test_coatjava (ubuntu-latest, eb-epc)	2m 1s
test_coatjava (ubuntu-latest, eb-eg)	2m 0s
release_build	-1s
generate_documentation	1m 1s
deploy_web_pages	0s
final	2s
	48m 40s

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