hangul 0.3.0

Work with korean hangul characters (한글). Validate characters, split syllables into jamo, merge jamos into syllables.

[0.3.0] - 2022-26-11.

• added method HangulIput.backspace

[0.2.0] - 2022-23-11.

• added function isValidJamo
• added function isValidJamoCode
• added class HangulInput for creating hangul syllables from individual characters

[0.1.1] - 2021-05-09.

• added example
• improved doc
• added tests
• standardized error messages

[0.1.0] - 2021-05-09.

• initial release with basic