Change error messages to indicate that all values are required in some methods.#182

aholmes merged 13 commits intomainuclahs-cds/public-R-CancerEvolutionVisualization:mainfrom

aholmes-change-error-msgsuclahs-cds/public-R-CancerEvolutionVisualization:aholmes-change-error-msgsCopy head branch name to clipboard