implements SCRoutine
- fix bytecode
  - add iter.hasNext
  - add iter.clone
  - fix iter.function$while
  - add Bytecode#state
  - add SCFunction#state
- implements SCRoutine
- implements SCThread
- fix main
- build v0.0.48
Merge pull request #62 from mohayonao/implements-routine

implements SCRoutine
fix tests
Merge pull request #63 from mohayonao/fix-tests

fix tests
fix constant variables
- rename constant variables, sc.C.ConstName -> sc.ConstName
- build v0.0.49
Merge pull request #64 from mohayonao/fix-consts

fix constant variables
add description
Merge branch 'master' into gh-pages