Fix processing and more examples

Full Changelog: v0.1-alpha.3...v0.1-alpha.4

• Still unstable
• Fixd bugs for feature calculation
• Still needs cudf for full pipeline
• Perhaps some bias and leakage in diagnostics

Use max cores

• performance of downloading historical data on Colab was slow; now it uses all cores

Initial alpha release test

Full Changelog: v0.1-alpha.1...v0.1-alpha.2

Initial alpha release test

What's Changed

• Create python-package.yml by @parmarsuraj99 in #6

New Contributors

• @parmarsuraj99 made their first contribution in #6

Full Changelog: https://github.com/parmarsuraj99/signalslite/commits/v0.1-alpha.1