Release 0.2.1

• chore(deps-dev): bump eslint (7032b51)
• chore(deps-dev): bump typescript, eslint (f99f3b2)
• ci: updates dependabot schedule interval (72e38e9)
• feat: support getSubcommand narrowing (3da757a)
• test: add tests for getSubcommand narrowing (621ceda)