2018-05-22 1.00 - initial release
2018-05-22 1.01 - fix can package (remove trash files)
2018-05-22 1.02 - fix Kwalitee and packaging issues
2018-05-23 1.03 - fix fragments insertion, add Selector::Entry::pseudoElement and allow delete $node->{attr} to remove attribute.
2018-05-23 1.04 - add missing myhtml_tree_node_remove, extend Collection API
2018-05-27 1.05 - fix specificity calculation