diff --git a/optimization.cabal b/optimization.cabal
--- a/optimization.cabal
+++ b/optimization.cabal
@@ -1,6 +1,6 @@
 name:          optimization
 category:      Math
-version:       0.1.6
+version:       0.1.7
 license:       BSD3
 cabal-version: >= 1.10
 license-file:  LICENSE
@@ -21,13 +21,11 @@
   a number of optimization techniques from the modern optimization
   literature.
   .
-  Those seeking a high-level overview of some of these methods are
-  referred to Stephen Wright's excellent tutorial from NIPS 2010
-  <http://videolectures.net/nips2010_wright_oaml/>. A deeper
-  introduction can be found in Boyd and Vandenberghe's *Complex
-  Optimization* which available freely online.
+  A deep introduction to optimization can be found in Boyd and Vandenberghe's
+  *Convex Optimization* which available freely online,
+  (<http://web.stanford.edu/~boyd/cvxbook/>).
 
-build-type:    Custom
+build-type:    Simple
 
 extra-source-files:
   .ghci
@@ -53,7 +51,7 @@
     vector              >= 0.10         && < 1.0,
     ad                  >= 3.4          && < 4.3,
     linear              >= 1.16         && < 2.0,
-    semigroupoids       >= 3.0          && < 5.0,
+    semigroupoids       >= 3.0          && < 6.0,
     distributive        >= 0.3          && < 0.5
 
   exposed-modules:
@@ -69,17 +67,3 @@
     Optimization.Constrained.Penalty
     Optimization.Constrained.ProjectedSubgradient
 
-
-test-suite doctests
-  type:    exitcode-stdio-1.0
-  main-is: doctests.hs
-  default-language: Haskell2010
-  build-depends:
-    base,
-    directory >= 1.0,
-    doctest >= 0.9.1,
-    filepath
-  ghc-options: -Wall -threaded
-  if impl(ghc<7.6.1)
-    ghc-options: -Werror
-  hs-source-dirs: tests
diff --git a/src/Optimization/LineSearch/ConjugateGradient.hs b/src/Optimization/LineSearch/ConjugateGradient.hs
--- a/src/Optimization/LineSearch/ConjugateGradient.hs
+++ b/src/Optimization/LineSearch/ConjugateGradient.hs
@@ -25,6 +25,7 @@
 -- a wide range of eigenvalues). It does this by choosing directions which
 -- satisfy a condition of @A@ orthogonality, ensuring that steps in the
 -- "unstretched" search space are orthogonal.
+
 -- TODO: clarify explanation
 conjGrad :: (Num a, RealFloat a, Additive f, Metric f)
          => LineSearch f a  -- ^ line search method
diff --git a/tests/doctests.hsc b/tests/doctests.hsc
deleted file mode 100644
--- a/tests/doctests.hsc
+++ /dev/null
@@ -1,73 +0,0 @@
-{-# LANGUAGE CPP #-}
-{-# LANGUAGE ForeignFunctionInterface #-}
------------------------------------------------------------------------------
--- |
--- Module      :  Main (doctests)
--- Copyright   :  (C) 2012-13 Edward Kmett
--- License     :  BSD-style (see the file LICENSE)
--- Maintainer  :  Edward Kmett <ekmett@gmail.com>
--- Stability   :  provisional
--- Portability :  portable
---
--- This module provides doctests for a project based on the actual versions
--- of the packages it was built with. It requires a corresponding Setup.lhs
--- to be added to the project
------------------------------------------------------------------------------
-module Main where
-
-import Build_doctests (deps)
-import Control.Applicative
-import Control.Monad
-import Data.List
-import System.Directory
-import System.FilePath
-import Test.DocTest
-
-##ifdef mingw32_HOST_ARCH
-##ifdef i386_HOST_ARCH
-##define USE_CP
-import Control.Applicative
-import Control.Exception
-import Foreign.C.Types
-foreign import stdcall "windows.h SetConsoleCP" c_SetConsoleCP :: CUInt -> IO Bool
-foreign import stdcall "windows.h GetConsoleCP" c_GetConsoleCP :: IO CUInt
-##elif defined(x86_64_HOST_ARCH)
-##define USE_CP
-import Control.Applicative
-import Control.Exception
-import Foreign.C.Types
-foreign import ccall "windows.h SetConsoleCP" c_SetConsoleCP :: CUInt -> IO Bool
-foreign import ccall "windows.h GetConsoleCP" c_GetConsoleCP :: IO CUInt
-##endif
-##endif
-
--- | Run in a modified codepage where we can print UTF-8 values on Windows.
-withUnicode :: IO a -> IO a
-##ifdef USE_CP
-withUnicode m = do
-  cp <- c_GetConsoleCP
-  (c_SetConsoleCP 65001 >> m) `finally` c_SetConsoleCP cp
-##else
-withUnicode m = m
-##endif
-
-main :: IO ()
-main = withUnicode $ getSources >>= \sources -> doctest $
-    "-isrc"
-  : "-idist/build/autogen"
-  : "-optP-include"
-  : "-optPdist/build/autogen/cabal_macros.h"
-  : "-hide-all-packages"
-  : map ("-package="++) deps ++ sources
-
-getSources :: IO [FilePath]
-getSources = filter (isSuffixOf ".hs") <$> go "src"
-  where
-    go dir = do
-      (dirs, files) <- getFilesAndDirectories dir
-      (files ++) . concat <$> mapM go dirs
-
-getFilesAndDirectories :: FilePath -> IO ([FilePath], [FilePath])
-getFilesAndDirectories dir = do
-  c <- map (dir </>) . filter (`notElem` ["..", "."]) <$> getDirectoryContents dir
-  (,) <$> filterM doesDirectoryExist c <*> filterM doesFileExist c