v0.3.0

• Update README.md 81831cb
• updated perf 34f7535
• fixed bug in compare_positive.js e2800d4
• added new files to package.json files e59aa4d
• consolidated a test c814444
• use floating point arithmetic for long_multiplication when safe 9902500
• safely use floating point arithmetic for long_substraction when you can a6dfe80
• updated long_addition to use floating-point arithmetic when it can do so safely 0ed5baf
• added division by zero error 8993467
• fixed bug with remainder f82f7c2
• updated README.md with floor and ceil b217dd7
• added ceil and floor d8830d9
• added sign.js a6aa93a
• added sign_nonzero.js 8835391
• added is_zero.js 9e7776c
• improved string cleaning 0f7da2f
• added constants.js b3cff13

v0.2.0...v0.3.0