v1.0.0

Merge old pulls:

• Upgrade node-sass range to >=4.0.0 Replaced with sass.
• Replace node-sass with Dart sass
• Ensure there is a variable + ignore imports
• Add cross-env
• Allow renaming variables via a new options.rename function

Update dependencies:

• minimist: "^1.2.0" to "^1.2.6"
• sass: "^1.43.3" to "^1.50.1"
• cross-env: "^5.2.0" to "^7.0.3"
• cross-spawn: "2.0.0" to "^7.0.3"
• eslint: "1.9.0" to "^8.13.0"
• mocha: "2.2.5" to "^9.2.2"
• proxyquire: "1.6.0" to "^2.1.3"
• sinon: "1.15.4" to "^13.0.2"
• wealthfront-javascript: Removed