minor code improvements
added IDEA project files to ignore
extracted Esper specific code into own class and added an example test class
added intellij and mac specific files to git ignore
events get removed after matching a statement for the first time
added plugin to generate jars with all dependencies
added workflow testcase to example application
improved readability of logging in update listener
improved formatting and organized imports
added javadoc to improve documentation for the trait
updated to latest model snapshot to fix problem with filter base streams using boolean filter
improved logging output