NTorT, NTSorT, NTorTS and TSorNT merged into ChainsAndTerminals due to low prevalence
Fix treating subpackages in the Ecore to BGF extractor
Grammars extracted from Ecore now have qualified nonterminal names
Roll back a C++ grammar to PDF2LLL, migrate ECMA C# grammar to Hunter
Better fancy hypertextual grammar export
Re-extract some grammars as a part of co-evolution with the extractors
More grammars from the Rascal library. Hunter lacks inner choices?