0.23.1

• Added tritext from the grave.
• Added option -m to tritext for markup of fonts. This was done specifically for scraping the EBNF from the WG5 Fortran specs.
• Add heat map to trperf. This option creates a "cover.html" that produces a color-coded HTML file of the input file used in testing. In addition, when moving the mouse over a token, a pop-up will contain all call stacks for LT() for the token. This information can be useful in determining how to optimize your grammar.
• Rewrite grammar analysis in trgen.