Merge pull request #108 from GlenHertz/patch-1

Add common SI prefixes for Farads (used in circuit design)

Author: MilesCranmer

src/units.jl

@@ -107,7 +107,7 @@ end
 @add_prefixes W (m, k, M, G)
 @add_prefixes C ()
 @add_prefixes V (p, n, μ, u, m, k, M, G)
-@add_prefixes F ()
+@add_prefixes F (f, p, n, μ, u, m)
 @add_prefixes Ω (n, μ, u, m, k, M, G)
 @add_prefixes ohm (n, μ, u, m, k, M, G)
 @add_prefixes T ()
@@ -142,7 +142,7 @@ end
     V,
 )
 @doc(
-    "Capacitance in Farads.",
+    "Capacitance in Farads. Available variants: `fF`, `pF`, `nF`, `μF` (/`uF`), `mF`.",
     F,
 )
 @doc(