Changes:
- Available package cache file is now writable for everybody to avoid trouble in multi-user context. #25
- Add update environment from file through REST endpoint PATCH /environments/ #26
- Switch to newer Python syntax
async-await - To improve UI reactivity in Jupyterlab:
- Long running task can now be cancelled #32
- The available packages list is used to find updatable package.
conda update --dry-run --allis not used any longer. But it is still used if the user request updating all possible packages.