* New lexer for Maxima computer algebra system * New lexer class MaximaLexer * Update _mapping.py to include Maxima lexer * New test input file maxima/foo.mac I find that the commands $ python3 -m pygments -O full -f html -o /tmp/foo.html tests/examplefiles/maxima/foo.mac $ python3 -m pygments -x -l pygments/lexers/maxima.py:MaximaLexer tests/examplefiles/maxima/foo.mac both produce expected output. * Commit output from pytest --update-goldens for Maxima example file Commit output from pytest tests/examplefiles/maxima --update-goldens as obtained by Cameron Smith. * Rename output file for test of Maxima lexer. * In Maxima lexer, capture content of comment all at once, instead of capturing each character separately. Update expected output for example input file, as produce by: $ pytest tests/examplefiles/maxima --update-goldens * In lexer for Maxima language, identify whitespace characters as such instead of just calling them Text. * In lexer for Maxima language, identify comma, semicolon, and dollar sign as Punctuation instead of Text. * In lexer for Maxima language, cut encoding comment, and put in license statement. * In lexer for Maxima language, identify keywords and other fixed strings such as operators via the words function, instead of a long regex with alternation. Incidentally update the example output, for which one symbol (namely "done") has changed classification. * In lexer for Maxima language, include additional test input and update output accordingly. * In lexer for Maxima language, relax pattern for integers, so integers are more accurately identified. Update test example output accordingly. * In lexer for Maxima language, adjust pattern for float numbers. Include additional test input for floats and update expected output. * In lexer for Maxima language, define analyse_text function. * In lexer for Maxima language, correct errors identified by make check (1) adjust package name underline (2) put in copyright notice Co-authored-by: Robert Dodier <robert_dodier@users.sourceforge.net>