Upgrade vendored submodules to latest versions (!192) · Merge Requests · dorie / dorie

Upgrade vendored submodules to latest versions

What does this MR do?

Upgrade the vendored Git Submodules to more recent versions. Both libraries have not had any breaking API changes recently, so upgrading should be rather smooth and there is no real need for sticking to a particular (release) version.

Update spdlog to latest version of branch v1.x.
Update googletest to latest version of branch master.

Is there something that needs to be double checked?

No.

Can this MR be accepted?

Assignee: If the Squash option is set, check/update the commit message right before merging!

Related issues

Closes #184 (closed)

### What does this MR do?
Upgrade the vendored Git Submodules to more recent versions. Both libraries have not had any breaking API changes recently, so upgrading should be rather smooth and there is no real need for sticking to a particular (release) version.
* Update `spdlog` to latest version of branch `v1.x`.
* Update `googletest` to latest version of branch `master`.

### Is there something that needs to be double checked?
No.

### Can this MR be accepted?
- [x] Updated submodules
- [x] Added/Updated documentation
- [x] Pipeline passing 
- [x] Squash option set 
- [x] Delete branch option set 
- [x] Added entry to `CHANGELOG.md`

_**Assignee:** If the Squash option is set, check/update the commit message right before merging!_

### Related issues

Closes #184

<!--
PLEASE READ THIS!

A Merge Request should be associated to a certain task or issue.
Its changes are supposed to be merged into the master branch.

Briefly explain __how__ you achieved the proposal of the task.

IMPORTANT: Make sure to set the merge request WIP if you are not finished yet.
-->

Edited Apr 06, 2020 by Lukas Riedel