newRPL - build 1255 released! [updated to 1299]

[The Shadow]

I'm not sure how big of an effect it will have on the Units menu, but the CGPM voted recently to redefine the International System of units, the changes go into effect on May 20 of next year.

Just as the speed of light in vacuum has an exact value now (since the meter is defined in terms of it), at that point so will Planck's constant, Boltzmann's constant, the charge of the electron, and Avogadro's number. (As well as a few more obscure numbers.) Since you'll never have to worry about them changing in the future, they may be worth adding to the menu.