by Tamela Hancock Murray @Tamela_Murray When I review proposals, one element often missing is publishing history. How do I know this? I own a computer. With a Keyboard. And a Search Engine. Guess What? So do All The Editors. [tweet_box design="default" float="none" inject="@Tamela_Murray on @BRMCWC #writing #pubtips"]Why Your Publishing History Is Important to Agents…