Usability and reliability improvements

v1.6

Features

• Pause/resume profiling
• Allocation profiling support for JDK 12, 13 (contributed by @rraptorr)

Improvements

• Include all AsyncGetCallTrace failures in the profile
• Parse symbols of JNI libraries loaded in runtime
• The agent autodetects output format by the file extension
• Output file name patterns: %p and %t
• -g option to print method signatures
• -j can increase the maximum Java stack depth
• Allocaton sampling rate can be adjusted with -i
• Improved reliability on macOS

Changes

• -f file names are now relative to the current shell directory