4.0.0

Added

• untracevar command that stops tracing a global variable.
• Window CI build through AppVeyor.
• OSX CI build through Travis.
• Style enforcement through RuboCop.
• C style enforment using the indent command line utility.
• Some remote debugging tests (thanks @eric-hu).
• Printer's support (thanks @astashov).

Changed

• A lot of internal refactoring.
• tracevar now requires the full global variable name (with "$").
• #92. The catch
  command is not allowed in post_mortem mode anymore. It was not working anyways.
• #85. step is now
  more user friendly when used in combination with up.
• var const can now be called without an argument and will show constants in
  the current scope.
• break with a class name now creates breakpoints regardless of class not
  being yet defined. If that's the case, it gives a warning but the class is
  created anyways.

Fixed

• Code reloading issues.
• set fullpath was not showing fullpaths. Now it is.
• up, down and frame commands now work in post_mortem mode (#93).
• rc file (.byebugrc) loading: invalid commands are just ignored instead of
  aborting, global (home) rc file is now properly loaded before project's file.
• #93. Backtraces not
  working in post_mortem mode.
• 'cmd1 ; cmd2 ; ...; cmdN' syntax which allows running several commands
  sequentially.
• #101. finish
  command not stopping at the correct line.
• #106. break with
  namespaced class, like break A::B#c should now work.
• Command history is now persisted before exiting byebug.
• Setting breakpoint in a method would stop not only at the beginning of the
  method but also at the beginning of every block inside the method.
• #122. Setting
  breakpoints on module methods (@x-yuri).

Removed

• autoreload setting as it's not necessary anymore. Code should always be up
  to date.
• reload command for the same reason.
• Gem dependency on debugger-linecache.
• step+, step-, next+, next-, set/show linetrace_plus and
  set/show forcestep commands. These were all mechanisms to deal with TracePoint
  API event dupplication, but this duplicated events have been completely removed
  from the API since
  r48609, so
  they are no longer necessary.
• info file subcommands: info file breakpoints, info file mtime, info file sha1, info file all. Now all information is listed under info file.
• testing setting. It was just a hack to be able to test byebug. Nobody was
  supposed to actually use it!
• var class command, just use Ruby (self.class.class_variables).
• p command, just use eval, or just type your expression and byebug will
  autoevaluate it.
• exit alias for quit.