Update dependencies
Fix indentation and style
Add log4j2 marker as an extra
Use constant naming convention for extra fields
Use a constant name for logback marker
Use same naming convention as in Log4j 2
Externalise the JNDI DSN lookup
Do not catch every exception when registering HttpEventBuilderHelper
Move ConnectionException in the connection package
Move DSN related classes in the dsn package
Add the possibility to register factories manually
Merge branch 'master' into raven-3.x