Fix appendix section titles

[dlej]

The example style file has appendix titles formatted as "Appendix A.", but the current .sty file only outputs "A." by default. This can't be fixed by packages like appendix or titlesec due to the custom sectioning of the .sty file. This patch modifies the section display when the \appendix command is run so that the appendix titles are displayed correctly.

[dlej]

This should the PDF referencing/table of contents issue in #3 as well, which was only resolved by removing the appendix title formatting.

[fabianp]

Thanks @dlej ! Do you mind submitting also the updated sample.pdf file? Thanks!

@akucukelbir : are you OK with this change?

[dlej]

@fabianp I have updated the sample.pdf file now. I also realized that \NewCommandCopy I had before was only supported by newer versions of LaTeX, so I replaced it with \let so that it works in older environments.

[fabianp]

Thanks. Looks good to me, but I'd like to have the LGTM of our production editor @akucukelbir before merging

[akucukelbir]

hi folks, sorry for the delay.

@dlej looks good at a quick glance! thank you!

@fabianp could you let me merge this when i have some time to update the production app? i need to keep both synced so i need a bit of time to coordinate both.

[fabianp]

@akucukelbir: sure!

[fabianp]

hey @akucukelbir . Happy new year and gentle ping :-)

[fabianp]

hey @akucukelbir , any chance you could take a look into this? thanks!

[akucukelbir]

Sorry for the delay. I'll merge and remove the period at the end of the Appendix. This is helpful. Thank you both.