Dem-roughness-calculator

What's Changed
* Fixed too low default high value threshold by lbatschelet in https://github.com/lbatschelet/dem-roughness-calculator/pull/9
* Implemented a encapsulated parameter design. by lbatschelet in https://github.com/lbatschelet/dem-roughness-calculator/pull/12


**Full Changelog**: https://github.com/lbatschelet/dem-roughness-calculator/compare/v1.0.8...v1.1.0

**Full Changelog**: https://github.com/lbatschelet/dem-roughness-calculator/compare/v1.0.7...v1.0.8

**Full Changelog**: https://github.com/lbatschelet/dem-roughness-calculator/compare/v1.0.6...v1.0.7

**Full Changelog**: https://github.com/lbatschelet/dem-roughness-calculator/compare/v1.0.5...v1.0.6

**Full Changelog**: https://github.com/lbatschelet/dem-roughness-calculator/compare/v1.0.4...v1.0.5

**Full Changelog**: https://github.com/lbatschelet/dem-roughness-calculator/compare/v1.0.1...v1.0.4