Release 0.1.9

• Several project & github config updates (#19) (ed091a2)
• Update README.md (0ed0372)
• Updated dev dependencies (42c12d7)
• Enabled GitHub Sponsors (48270db)
• updates eslint rules (4f00cd7)
• TSLint → ESLint (125a7e5)
• Updated jest config (6cee937)
• whitespace (7330bc3)