Update jetbrains logo

* Move callback function in thread_pool ctor

* Added const qualifiers to logger.h

* Remove unused includes from file_helper-inl.h

* Fix comments and remove unused include from helpers-inl.h

* Fix typo in comment for set_default_logger method.

* Use `std::move` for `old_logger` in `set_default_logger`.

* Use std::move in example

* Wrap `main` content in try block for exception safety.

* Added coverity to ci

README.md

@@ -524,6 +524,7 @@ Documentation can be found in the [wiki](https://github.com/gabime/spdlog/wiki)
 
 ---
 
-Thanks to [JetBrains](https://www.jetbrains.com/?from=spdlog) for donating product licenses to help develop **spdlog** <a href="https://www.jetbrains.com/?from=spdlog"><img src="logos/jetbrains-variant-4.svg" width="94" align="center" /></a>
-
-
+### Powered by
+<a href="https://jb.gg/OpenSource">
+  <img src="https://resources.jetbrains.com/storage/products/company/brand/logos/jetbrains.svg" alt="JetBrains logo" width="200">
+</a>