Faster duplicated found using R function not Rcpp.
Removed anyDuplicated method.
Switched to DataFrameOrNull for internalPos slot in GTuples.
Documentation of GTuples class and methods (incomplete).
GTuplesList class and methods.
Associated documentation (incomplete).
Comparison of GTuples.
Documentation (incomplete).
Disallow coverage methods.
findOverlaps methods.
Associated documentation (incomplete).
Intra-tuples methods.
Associated documentation (incomplete).
nearest methods.
Disallowed methods.
roxygen fixes.