fixed isone, iszero for Measure

Author: chakravala

Project.toml

@@ -1,7 +1,7 @@
 name = "MeasureSystems"
 uuid = "ea45d09e-59d0-491b-a101-09823c6a9fd4"
 authors = ["Michael Reed"]
-version = "0.1.7"
+version = "0.1.8"
 
 [deps]
 Similitude = "d70e672a-ff44-4dfc-8031-4cc812d84922"

src/MeasureSystems.jl

@@ -45,6 +45,8 @@ end
 Base.show(io::IO,M::Measure{N}) where N = show(io,measure(M))
 Base.one(::Measure) = 𝟏
 Base.zero(::Measure) = 𝟏-𝟏
+Base.isone(::Measure) = false
+Base.iszero(::Measure) = false
 FieldConstants.Constant(N::Measurement) = Constant{cache(N)}()
 Base.inv(M::Measure) = cache(inv(measure(M)))
 Base.sqrt(M::Measure) = cache(inv(measure(M)))