v0.6.1

Add

• Add StableSample function signature to readme

Fix

• Fix linting warnings for normal distribution functions formatting and tests

Update

• Update documentation links and rename DOC.md to DOCUMENTATION.md
• Update README with link to pkg.go.dev reference and release section
• Update Makefile with new changelog, docs, and release directives
• Update DOC.md links to GitHub source code
• Update doc.go comment and add DOC.md package reference file
• Update changelog using git-chglog