Merge branch 'release/0.0.2'

JSONフォーマットに関する指定を追加
Merge branch 'release/0.0.4'
Merge branch 'release/0.0.5'
Merge branch 'release/0.0.6'
Merge branch 'release/0.0.7'
requirements.txtを廃止してsetup.pyのみに
Merge branch 'release/0.0.9'

Conflicts:
	setup.py
	spreadsheetconverter/__init__.py