• Support slf4j 2.x / logback 1.3.x / 1.4.x
• Drop support for dbcp 1
• Drop support for bonecp
• Drop rest of tomcat7 support items missed
• Move internal logging to slf4j 2.x and logback 1.3.x
• In case where tomcat is not using its required add opens per tomcat since jdk 9+, place a new exception when xstream used to catch that situation and allow initialization to complete.