Fix for detecting left recursion in rules like:#3

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mingodad wants to merge 15 commits intoSSW-CocoR:masterfrom

mingodad:master

Commits on May 28, 2021

Commits on Jun 10, 2021

Commits on Jun 11, 2021

My last fix for left recursion detection didn't worked for any depth, this now seems to work in all cases
mingodad
committed

Commits on Jun 12, 2021

Fix SynTree.dump2 that is supposed to show a pruned tree
mingodad
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Commits on Jun 14, 2021

Rename SynTree::dump to SynTree::dump_all and SynTree::dump to SynTree::dump_pruned
mingodad
committed

Commits on Jul 1, 2021

Fix for endless loop with some ill grammars
mingodad
committed

Commits on Aug 14, 2021