1. An extensible dependency management framework, comprising: at least one computer system including: a dispatcher system configured to create, register, and update a set of dependency management dispatchers, wherein dependency management dispatchers of the set are configured to receive notifications when a determination is made by at least one external caller of changes to a file resource or a folder resource, and further wherein the notifications indicate changes to specific elements of the resources; a handler system configured to create, register, and update a set of dependency management handlers that is distinct from the set of dependency management dispatchers, wherein each dependency management handler performs change management update tasks for a set of dependents of a changed resource, the change management update tasks being at least one of file resource or folder resource refactoring, or file resource or folder resource revalidation for dependent resources identified as being affected by the changed file resource or the changed folder resource; and a change management system configured to receive the notifications of changes to file resources or folder resources from a dependency management dispatcher of the set, query an index to identify dependent resources affected by the changes to the specific elements of the changed file or folder resources, and call a dependency management handler of the set associated with the changed resources to update and track the dependent resources.