This package provides a list data structure and common list
functions such as \macrolistadd, \macrolistremove,
\macrolistforeach, as well as \macrolistremovelast (similar to
C++'s pop_back) and \macrolistjoin (similar to Javascript's
arr.join). Unlike most programming languages, the lists in this
package are 1-indexed, meaning the first element is numbered 1,
the second element numbered 2, and so on.
