Release 1.0.0

• Update README (20c27dd)
• Refactoring (07887f3)
• Refactoring (408785d)
• Fix leak (0f0b7a4)
• Try to fix concurrency issue (e474cbf)
• Refactoring (ae9cdd3)
• Refactoring (97e7754)
• Refactoring (587d437)
• Refactoring (1f8a23b)
• Refactoring (6ed8fad)
• Add comments (2dd75ea)
• Refactoring (37f1ff9)
• Add test (b8a2f34)
• Refactoring (1cf876c)
• Move helpers (0da2070)
• Move tests (0143d6c)
• Fix test (2b942f9)
• Add test (89b7322)
• Add tests (4a847a7)
• Add tests (400a32e)
• Add tests (998d72e)
• Add test (9bd4ed0)
• Add test (86fa4be)
• Add test (c7a5bec)
• Add test (db8ab7f)
• Upgrade all-node-versions 0.0.2 -> 1.0.0 (d29292b)
• Add test (a67f669)
• Upgrade global-cache-dir 0.0.2 -> 1.0.0 (f4c34d1)