Covalent-aws-plugins

Fixed

- Premature covalent base plugins only file removal.

Changed

- Updated version of covalent to 0.202.0

Docs

- Updated README to reflect the fact that this plugin now installs each individual executor plugin
- Added a few lines about the plugin ecosystem and covalent

Fixed

- `BASE_COVALENT_AWS_PLUGINS_ONLY` needs to be removed after all the installations are complete.

Changed

- Pre-release versions of the plugins in the corresponding requirements file.

Fixed

- Store / Read `BASE_COVALENT_AWS_PLUGINS_ONLY` in a temporary file rather than storing it as an environment variable.

Changed

- Setting `BASE_COVALENT_AWS_PLUGINS_ONLY` environment system wide to circumvent `setup.py` subprocesses when installing.

Changed

- Added back import of `AWSExecutor` in `covalent_aws_plugins/__init__.py` to enable `from covalent_aws_plugins import AWSExecutor`.