Add macro replacement for LaTeX functions similar to \sinh

[poortho]

From @ClaudeZou on September 30, 2015 20:52

Add the replacements for \sinh to the functions needed.

Copied from original issue: DRMF/texvcjs#24

[poortho]

Note: Although this is very easy to implement, I am not going to be able to put the solution on github for a while since I am in the middle of solving other issues, and implementing this now would cause me to either delete all changes I've made to solve the issue or to make a commit solving multiple issues at once which is not good since if one of the solutions has an issue we will have to remove all of them.

[poortho]

Finished with pull request #41

[poortho]

From @HowardCohl on May 6, 2016 20:32

@ClaudeZou @physikerwelt I am confused. How can this issue be closed? Shouldn't it just be moved to the texer repo? (or is this the same as closing).