Changed the name of the Latex file from UserGuide.tex to userManual.tex and the same change for the pdf version. This was to be consistent with other CALGO Algorithms.

Added SIAM journal Latex style files from their web site; all files were transferred as requested by SIAM. The name of the style file in the userManual.tex file was changed to siamart220329 from siamltex. The user manual built fine with these files. 

Tim Hopkins 
Dec 14 2022
