Update Diff.jl (#6)

frankwswang · Rogerluo · commit a61c22201b7e · 2019-04-30T13:55:20.000+08:00
import method QDiff to Yao.mat and Yao.apply!
diff --git a/src/Diff.jl b/src/Diff.jl
@@ -1,5 +1,5 @@
 export Rotor, generator, AbstractDiff, BPDiff, QDiff, backward!, gradient, CPhaseGate, DiffBlock
-import Yao: expect, content, chcontent
+import Yao: expect, content, chcontent, mat, apply!
 using StatsBase
 
 ############# General Rotor ############
