Add users muting.

test/unit/specs/modules/users.spec.js

@@ -17,4 +17,18 @@ describe('The users module', () => {
     expect(state.users).to.eql([user])
     expect(state.users[0].name).to.eql('Dude')
   })
+
+  it('sets a mute bit on users', () => {
+    const state = cloneDeep(defaultState)
+    const user = { id: 1, name: 'Guy' }
+
+    mutations.addNewUsers(state, [user])
+    mutations.setMuted(state, {user, muted: true})
+
+    expect(user.muted).to.eql(true)
+
+    mutations.setMuted(state, {user, muted: false})
+
+    expect(user.muted).to.eql(false)
+  })
 })