## v1.0.0
* Stable Version
* Add MassFow
* Add HighPressure
* Add LowPressure
* Add KinematicViscosity
* Add Speed
* Add DynamicViscosity
* Add Torque
* Add formatter method to_c, to_s, to_i, to_r, to_f

## v0.2.0
* Change module required location
* Add module self method for get available unit conversion class
* Add Density method conversion
* Add Volumetric liquid flow
* Add Volumetric gas flow

## v0.1.0
* initial release
* Length Unit
* Area Unit
* Mass Unit
* Volume Unit