php8.1: added intersection types support (#29)

changelog: added v0.8.1-rc.1 (#23)

cnd: default version has been changed to 8.0

Merge pull request #117 from z7zmey/refactoring

Refactoring

Merge pull request #115 from z7zmey/feature-110

[#105] fix counting newlines in strings

Merge pull request #108 from z7zmey/issue-107

Fix infinite loop for "$foo$"

update .travis.yml

[#96] handle lexer errors

Merge pull request #75 from z7zmey/dev

v0.6.0

#44: do not trim last nil if array item list ends by a comma