v0.3.0 Localized command line tool

• Based on TypeScript v3.3.3333
• Show localized diagnostic message in command line tool by default #21
• Document tsc --locale usage in readme
• (partial) Wrap keyword detector as functions #18

Keywords change:

• Traditional Chinese
  • while 每當 -> 直到 #20
  • some unused keyword updates
• Simplified Chinese
  • while 每当 -> 直到 #20