Configurable JSPM Bundler

jspm-bundler is a Node.js build tool providing advanced, configurable bundling for applications built with JSPM. It allows developers to define and manage their bundle manifests in an external JavaScript file, `bundles.js`, rather than directly modifying `config.js`. This approach simplifies version control, enables independent updates of bundle configurations, and is especially useful in environments where `config.js` is dynamically generated or managed. The library supports bundling specific module groups, offers robust exclusion capabilities for packages or groups, implements cache busting through generated file checksums, and can produce self-extracting (static) bundles. Currently at version 0.1.11, the package demonstrates a maintenance cadence with recent updates addressing bug fixes, dependency compatibility, and adding new configuration options like `packagePath` and `configFile`. It serves a niche within the JSPM ecosystem by offering more granular control over the bundling process compared to JSPM's built-in bundler.