MINOR: improve Streams checkstyle and code cleanup (#5954)
-rw-r--r-- 527 .gitignore
-rw-r--r-- 1749 .travis.yml
-rw-r--r-- 719 CONTRIBUTING.md
-rw-r--r-- 754 HEADER
-rw-r--r-- 32216 LICENSE
-rw-r--r-- 336 NOTICE
-rw-r--r-- 570 PULL_REQUEST_TEMPLATE.md
-rw-r--r-- 8095 README.md
-rw-r--r-- 7607 TROGDOR.md
-rw-r--r-- 8027 Vagrantfile
drwxr-xr-x - bin
-rw-r--r-- 48425 build.gradle
drwxr-xr-x - checkstyle
drwxr-xr-x - clients
drwxr-xr-x - config
drwxr-xr-x - connect
drwxr-xr-x - core
-rw-r--r-- 3082 doap_Kafka.rdf
drwxr-xr-x - docs
drwxr-xr-x - examples
-rw-r--r-- 1113 gradle.properties
drwxr-xr-x - gradle
-rwxr-xr-x 1356 jenkins.sh
drwxr-xr-x - jmh-benchmarks
-rwxr-xr-x 19703 kafka-merge-pr.py
drwxr-xr-x - log4j-appender
-rwxr-xr-x 34693 release.py
-rwxr-xr-x 6118 release_notes.py
-rw-r--r-- 1361 settings.gradle
drwxr-xr-x - streams
drwxr-xr-x - tests
drwxr-xr-x - tools
drwxr-xr-x - vagrant
-rw-r--r-- 1026 wrapper.gradle