Update CHANGELOG.md

Update CHANGELOG.md

Update CHANGELOG.md

Update CHANGELOG.md

removing RxJava1.x stuff from update_docs.sh script

Update CHANGELOG.md

༼ つ ◕_◕ ༽つ giving version 3.0.2 in README.md

༼ つ ◕_◕ ༽つ giving version 3.0.1 in README.md

༼ つ ◕_◕ ༽つ giving version 3.0.0 in README.md

༼ つ ◕_◕ ༽つ giving version 3.0.0 in README.md