Version 0.0.4

Changes:

• Added:
  • Added support to parse OpenSLR THCHS-30 version
  • Added returning of an exit code
• Changed:
  • Changed default command to be parsing the OpenSLR version for THCHS-30 by renaming the previous command to convert-thchs-cslt

Full Changelog: v0.0.3...v0.0.4