Bugger parity

[jkrems]

• Step-by-step debugging
• Variable introspection
• Support for console API
• Evalute expressions in the console
• Monitor outgoing http(s) requests your script does (Network tab)
• Heap snapshots and CPU profiles (Profiles tab)
• Live edit the running JavaScript code
• Break on exception
• Break on uncaught exception
• --brk to stop at the first line
• Continue to location
• Disable/enable all breakpoints
• Track heap allocations
• Shows up in chrome://inspect
• Source maps aren't recognized correctly

Known issues

• Reconnecting in paused state does not send the backtrace correctly
• The timeline tab doesn't do anything useful right now (e.g. console.{time, timeEnd, timeStamp}, network request and heap usage reporting aren't working). Profiling data is collected but not really displayed.
• For babel-core/register and coffee-script/register, editing the files doesn't work
• Break event handling doesn't report on the breakpoints involved
• Doesn't have a fancy website
• Impossible to pass V8 flags (and other options) into CLI tool