feat: add eager/lazy loaders for expression systems (#81)

* feat: add expression system loaders

* refactor: code cleanup

* Update code coverage badge

* chore: build without dev dependencies

* chore: bump version to v1.5.0

* Update docs

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Co-authored-by: kvdomingo <[email protected]>

chore: bump to v1.4.0 (#79)

chore: bump to v1.3.2 (#77)

chore: update docker build process (#74)

Revamp backend (#72)

* Replace Django with Flask and initial custom exceptions for CLI

* revise task definitions, file watchers, format isort

* add types

* revise build tasks

* FE cleanup

* Restore GA

* fix tests

add build step

reflect CLI rename in tests

centered loading screen in app

completed port of entire Design view to an SPA on the index page

added DNA- & protein-based characterization to web app; added quickst…

…art to docs; bump to release version v1.0.0