Release 2.1.1

• build: use correct flag to disable clean git working directory (8a79731)
• build(ci): use CircleCI pipelines (bec3116)
• fix: update TS typings (d767e3a)
• Fix Yakash and Half-Yaiyha conversion issues (#75) (d154ae6)
• fix(toAscii): Add Î to Sihari swap rule #63 (80b9ac7)
• test(toAscii): Add ਭ੍ਯਿੋ #63 (439d967)
• test(toHindi): Update Yakash #28 (1c5c8e4)
• test(toAscii): Update Yakash #28 (482106b)
• fix(toUnicode): Add Î to Sihari swap rule #63 (63a4ce1)
• test(toUnicode): Add test for ਭ੍ਯਿੋ #63 (1fc8fa2)
• fix(toUnicode): Yakash before Sihari #28 (2b1c93e)
• test(toUnicode): Add proper Yakash conversions (f93b40d)
• chore(npm): Update devDependencies (5700473)