lurkmathml/mathmltest.sh: add --no-init option
lurkmathml typesets t(x) incorrectly
Fixed in commit bdd8aee3c8.
This also affects the typesetting of t[x] and t[x](y), so we need to patch mathmlsym, too.
mathml.lisp: fix bug #4714, bug #5260
lurkmathml typesets t(x) incorrectly
documentation.html: add a paragraph on W. Lindner's Tensor Calculus
relatedprojects.html: update the description of Yamwi