Better access to scalar value

mentioned in merge request !11 (merged)

added 9 commits

• 1be26550...3f0d7920 - 7 commits from branch master
• fb770fef - renamed Enum::getScalar() -> Enum::toScalar()
• 2b2dd89d - added implementation of __toString() method

Compare with previous version

enabled an automatic merge when the pipeline for 2b2dd89d succeeds

mentioned in commit ea295f89

merged