Secor v0.29 is released

[Henry Cai]

Checkout the release notes at: https://github.com/pinterest/secor/blob/master/RELEASE.md

v0.29

• Javadoc Update: fix a few missing params and exclude a few packages
• Add native support for Prometheus
• Rework cleanup process on shutdown
• Add secor.max.active.files property to controll active file count
• Add max.poll.interval.ms kafka producer setting
• Fix various unit test failures related to powermock running in JDK 11
• Upgrade guava to 24.1.1 to address the following security issue
• Upgrade parquet version from 1.9.0 to 1.11.0