Ethereumjs Account Versions Save

First TypeScript based release of the library together with a switch to an ES6 class structure of the Account class. TypeScript handles ES6 transpilation a bit differently (at the end: cleaner) than babel so require syntax of the library slightly changes to:

let Account = require('ethereumjs-account').default

The library now also comes with a type declaration file distributed along with the package published.

• Migration of code base and toolchain to TypeScript, PR #27
• Updated ethereumjs-util dependency to v6.0.0

• Fixes a bug for contract code stored with level DB, PR #5
• Added safe-buffer dependency for backwards compatibility, PR #14
• Code examples in README for getCode/setCode and getStorage/setStorage, PR #19
• Added test coverage
• Updated dependencies