logstash-logback-encoder-4.8

• #165 Fix documentation for ShortenedThrowableConverter
• #171 Add ability to output version field as string (instead of number)
• #172 / #173 Stop providers when JsonProviders.stop() is called (instead of starting them)
• #175 Remove out-of-date disclaimer on logback issue
• #186 Document how to end prefix/suffix with whitespace
• #187 Fix typo in documentation
• #190 disable SerializationFeature.FAIL_ON_EMPTY_BEANS by default, and add better error handling around failed serializations