v0.15.2

What's Changed

• closes #100
• add more logging, especially where filtering/removal of records happens
• add logic to dump raw response if OTF_LOG_RAW_RESPONSE env var is set to true
  • only logging at DEBUG level so need to have that set too, which can be done with OTF_LOG_LEVEL env var
• add coloredlogs package to make logs easier to read
• remove headers from request log
• change log format structure slightly, use % formatting
• change some log lines to use % to avoid calling methods/converting to string when not logging at that level
• relax data type on PerformanceMetric class, remove custom parsing, was not useful

Full Changelog: v0.15.1...v0.15.2