updates author list; adds issue template

[buildbot-princeton]

The files changed require a buildbot test. Buildbot has started.

[codecov-commenter]

Codecov Report

Patch and project coverage have no change.

Comparison is base (f5ad973) 40.94% compared to head (d6cc6d9) 40.94%.

:mega: This organization is not using Codecov’s GitHub App Integration. We recommend you install it so Codecov can continue to function properly for your repositories. Learn more

Additional details and impacted files

```diff @@ Coverage Diff @@ ## devel #815 +/- ## ======================================= Coverage 40.94% 40.94% ======================================= Files 263 263 Lines 57645 57645 ======================================= Hits 23603 23603 Misses 34042 34042 ``` | [Impacted Files](https://codecov.io/gh/SPECFEM/specfem3d_globe/pull/815?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM) | Coverage Δ | | |---|---|---| | [src/specfem3D/specfem3D.F90](https://codecov.io/gh/SPECFEM/specfem3d_globe/pull/815?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM#diff-c3JjL3NwZWNmZW0zRC9zcGVjZmVtM0QuRjkw) | `100.00% <ø> (ø)` | | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=SPECFEM)

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Do you have feedback about the report comment? Let us know in this issue.

[buildbot-princeton]

There was an error running buildbot. The system administrator needs to look into it