Add a couple more articles

Author: tfausak

content/issues/147.markdown

@@ -71,7 +71,9 @@ This is a weekly summary of what's going on in its community.
 -   [A Brief Introduction to the λ-Calculus (Part 1)](https://whatthefunctional.wordpress.com/2019/02/20/a-brief-introduction-to-the-%CE%BB-calculus-part-1/)
 -   [A three-stage program you definitely want to write](https://mpickering.github.io/posts/2019-02-14-stage-3.html)
 -   [A Touch of Topological Quantum Computation 3: Categorical Interlude](http://www.philipzucker.com/a-touch-of-topological-computation-3-categorical-interlude/)
+-   [Adding bit vectors - Branchless Comparisons](https://haskell-works.github.io/posts/2019-02-22-adding-bit-vectors-branchless-comparisons.html)
 -   [Align, These, and HTTP headers](https://typeclasses.com/news/2019-02-align-these-and-http-headers)
+-   [Bank kata in Haskell - printing a statement](https://codurance.com/2019/02/21/bank-kata-in-haskell-printing/)
 -   [Build Haskell stuff in your browser](https://2mol.github.io/posts/replit-haskell/)
 -   [C◦mp◦se NYC 2019 CFP](https://www.composeconference.org/2019/cfp/)
 -   [Haskell Symposium 2019 CFP](https://icfp19.sigplan.org/home/haskellsymp-2019#Call-for-Papers)