3.1.0

Removed

• show commands command. Use history instead.
• Byebug.start accepting options. Any program settings you want applied from
  the start should be set in .byebugrc.
• trace command. Use set linetrace for line tracing and tracevar for
  global variable tracing.
• show version command. Use byebug --version to check byebug's version.
• set arg setting. Use the restart command instead.

Changed

• linetrace_plus setting renamed to tracing_plus.

Added

• history command to check byebug's history of previous commands.