minor bug fixes
concordance() now can take sentences as input and
will also show sentence boundaries
lambdaG_visualize() can now the text heatmap either
with sentences ordered by lambdaG values (default) or by the original
order of the sentences in the text
lambdaG_visualize() can now visualize negative
lambdaG values in an html file
ngram_tracing() contained a major bug when
performing tests with multiple known authors which would lead to
anomalously high and incorrect performance statistics. This has been
fixed.
performance() progress bar now can be
optional
performance() can run leave-one-out by author rather
than just by text