bignum support

• Added bignum parsing (#4).
• Switched testing frameworks from tap to tape.
• Updated max supported node.js version to 6.3.1.
  • Added travis testing for node.js 6.3.x.

Removed inconsistent `dump()` function

Bug Fixes

• Removed inconsistent dump() function

Misc

• Minor changes to README and package.json

Object support

Features

• Added support for Ruby Objects

Bug Fixes

• Fixed a bug with three-byte numbers
• Fixed a bug with IVAR JSON serialization

Misc

• Updated library dependencies