Version 1.5.3 (#199)

## Changelog
### Fixed

- Config refactoring #173 & #174
- Fix track websocket test #176
- Better S3 credentials handling and validation #177
- Fix issue where egress in state STARTING or ACTIVE would never change to COMPLETED
- Do not log failures due to misconfigured egress requests with "error" severity #183
- Update logging library #185
- Redact upload secrets before sending status events #186
- Fix failure to unload pulseaudio plugin causing eventual pulseaudio failure.

### Added
- Add process manager object to start and manage handler processes #175
- Shutdown service if we hit a fatal error, such as pulseaudio failing #181
- Log Chrome errors #182

version/version.go

@@ -1,3 +1,3 @@
 package version
 
-const Version = "1.5.2"
+const Version = "1.5.3"