Version 0.5.1.0

• New built-in functions: \bifurcate, \divMod, \flatten, \histogram, \isBig, \isSmall, \over, \popCount, \rle, \unrle.
• New particle: \zipWithTrunc.

Breaking changes

• \nonzero is renamed to \isNonzero.
• \nonempty is renamed to \isNonempty.