System Runtime v4.0.0

Changelogs:

• Improved: speed of the library (about 20% faster).
• Improved: size of the library (about 5% lighter).
• Improved: renamed and cleared code of internal schemas.
• Removed: classInfo API. You can now do the same with:

runtime.require('db').collections()._GeneratedSchema({
  _name: your_schema_name
})

• Updated: dev dependencies.