Fixes #48: Support PHP 7.4 typed properties #56
Merged
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Adds support for type properties according to https://wiki.php.net/rfc/typed_properties_v2
Note: This is my first go at using tree-sitter and improving the PHP parser. So any input on how to improve the contribution would be greatly appreciated. E.g. I was unable to figure out how to avoid adding a new conflict rule. Any pointers on a more elegant solution?
Note2: I've also added some more tests around classes. The PHP code in these are from https://github.com/nikic/PHP-Parser which, to my knowledge, is the most complete PHP parser. They're however BSD-3 licenced. Should this be avoided or annotated in a special way?