Version 1.2.0

- New: Use monotonic clock for duration calculations
- New: Drop support for ruby <2.1 to support monotonic clock
- New: Run CI on Ruby 2.5

Bump version to 1.1.2

Version 1.1.1

Bump the v1.1.0 release date

Merge pull request github#31 from github/one-dot-oh-dot-oh

1.0.0

Bump version to 0.0.4

Bump version to 0.0.3

Merge pull request github#10 from github/bump-version

Bump to version 0.0.2

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