Add some xrefs and TeX-style math for html and pdf
Fix math display of sinc definition
Merge branch 'master' into rtoy-highlightjs-example-maxima-blocks-texi-dev
Check that makeinfo version is > 5.1
The docstring says it should be an integer. And it also says -1 means all integers are expanded. So should it really accept any real number? I did notice that factlim:3.0 works (with HEAD), but then double_factorial(6) returns 48.00000...1. But with the default factlim value of 100000, double_factorial returns 48. Not sure what's going with that, but that's probably a different issue from this one. Easy enough to add a :setting-predicate for factlim to make sure it's a real (or integer) so that it...
integration error
Not a bug since applying ratsimp gives the original expression.
Check that makeinfo version is > 5.1