Update how Decorator Typing Works

[etsuo]

For example: SakuraApiModel and SakuraApiRoutable. Currently, SakuraApi is using abstract classes to define the static and prototype methods that are added to a class through injection via decorators like @Model and @Routable.

There are all kinds of problems with this:

• Suggestion: Add abstract static methods in classes and static methods in interfaces microsoft/TypeScript#14600
• Generic { new(...args: any[]): T } parameter doesn't work for abstract classes microsoft/TypeScript#5843
• Allow type system to represent this in function inputs/outputs microsoft/TypeScript#285
• Support specifying type of "this" in function implementations microsoft/TypeScript#229
• Supporting 'this' type microsoft/TypeScript#3694

More recently, this has become a problem with upgrading to TypeScript 2.6 -- there appear to be stricter checks in place that's leading to some unit tests failing because of TypeScript typing errors.

Goal:

• Explore possible mixin / abstract class alternatives
• Implement those alternatives
• Update all the npm dependencies

Note: This means that v0.8.0 will be a breaking update.

Done - except for:

npm outdated
Package         Current  Wanted  Latest  Location
@types/jasmine   2.5.45  2.5.45   2.8.3  @sakuraapi/api
mongodb          2.2.33  2.2.33   3.0.1  @sakuraapi/api

The Jasmine typedef has issues... Mongo upgrade is being tracked by #112