Allows the use of functions as properties to compute properties of objects.
Template engines allow for easy and flexible UI building.
The MIT License is a very permissive license which allows all uses, including business use, without warranty.
Allows for nesting view templates into top-level views from within a template.
Legacy browser support can be important for corporate projects and projects with a large user base consisting of Internet Explorer users.
The major version number is above 0. This means there will be no compatibility breaking API changes introduced by the development team.
Models and views can be bound to update each other.
Views can be bound to update automatically when an observable object changes.
Models are observed for changes. This is a well known pattern. Can be more performant than dirty-checking in some cases.
Routing allows interaction with the browser url. This is very important for a good user experience if you are building one-page apps.
Supports a template engine that can be pre-rendered on the server. This possibly improves page speed, especially on devices with low computing power.
Less dependencies means less extra scripts to include, usually resulting in less development overhead and faster load times.