v1.2.0

Changes

• Always write thread_begin events
• Use PERF_RECORD_SWITCH and PERF_RECORD_COMM events for system monitoring mode
  • This allows using system monitoring mode without access to the debugfs
• Improved feature checks at build time
• Improved naming of unresolvable functions
• In system monitoring mode, use the same location for samples and scheduling information
• Improved monitoring to reduced system load during monitoring