tiny, yet Moo(se)-compatible type constraint

 Type::Tiny is a tiny class
 for creating Moose-like type constraint objects
 which are compatible with Moo, Moose and Mouse.
 .
 This package also includes Types::Standard,
 a Moose-inspired library of useful type constraints,
 and Type::Params, to allow very fast checking and coercion
 of function and method parameters.