add backup files to ignore
cleaner formatting of dimension to 2 decimals in pts
fixed formatting (tidy)
moved font resolution code from TeX.pool; added initial (guestimate) code for computing string size (will eventually evolve to more accurate sizing)
make space for dimensions stored in all boxes; new methods to compute, cache, return and set dimensions
export AfterAssignment to carray out any afterassignments stored
moved font resolution code to LaTeXML::Font; added AfterAssignment to several assignment-like operations; defined \ht,\wd,\dp to get more 'actual' box dimensions; more support for computing sizes of things
a bit more context in some cases
updated test cases for more accurate or better formatted dimensions
error reports give better context in some cases