Remove Stack

We can build without Stack and it feels nice to not be dependent on
another tool built on top of another tool etc.

Massage some versions of dependencies and some datetime formatting code
to make everything work with the versions of the dependencies installed.

.gitignore

@@ -13,3 +13,4 @@ cabal.sandbox.config
 .*.swp
 *.log
 *.dump-hi
+dist-newstyle/

mat-chalmers.cabal

@@ -30,22 +30,22 @@ library
 
   build-depends: aeson
                , attoparsec
-               , base >=4.7
+               , base >=4.9
+               , bytestring >=0.10.8.2 && <0.12
                , css-text
                , exceptions == 0.10.4
                , heredoc == 0.2.0.0
                , http-client
-               , http-client-tls == 0.3.5.3
-               , logging-effect == 1.3.12
+               , http-client-tls >= 0.3.6.3 && <= 0.4
+               , logging-effect >= 1.4.0 && <= 2.0
                , microlens-platform
                , lucid >= 2
                , mtl == 2.2.2
                , old-locale == 1.0.0.7
                , prettyprinter == 1.7.1
                , safe == 0.3.19
                , tagsoup == 0.14.8
-               , text == 1.2.4.1
-               , bytestring == 0.10.12.0
+               , text >= 2.0 && <= 3.0
                , file-embed
                , thyme
                , word8 == 0.1.3
@@ -55,26 +55,26 @@ executable mat-chalmers
   ghc-options: -threaded -rtsopts -with-rtsopts=-N -Wall -Werror -Wunused-binds -Wunused-imports -Wcompat
   hs-source-dirs: app
   build-depends: mat-chalmers
-               , base >= 4.7
+               , base >= 4.9
                , bytestring
                , file-embed
-               , http-client-tls == 0.3.5.3
+               , http-client-tls
                , microlens-platform
                , logging-effect
                , mtl
                , scotty
                , time == 1.9.3
                , wai-extra
                , wai-middleware-static-embedded == 0.1.0.0
-               , async >= 2.1.1
+               , async >= 2.2.4 && <= 3.0
   default-language: Haskell2010
 
 Test-Suite test-mat
   type: exitcode-stdio-1.0
   main-is: Main.hs
   hs-source-dirs: test
   default-language: Haskell2010
-  build-depends: base >= 4.7
+  build-depends: base >= 4.9
                , bytestring
                , mat-chalmers
                , hspec == 2.7.10

src/View.hs

@@ -9,13 +9,13 @@ where
 import           Data.FileEmbed
 import qualified Data.Text.Lazy                as T
 import qualified Data.Text.Lazy.Builder        as T
-import           Data.Thyme
+import           Data.Thyme                               ( defaultTimeLocale
+                                                          , formatTime )
 import           Lens.Micro.Platform                      ( (&)
                                                           , (%~)
                                                           , both
                                                           )
 import           Lucid
-import           System.Locale                            ( defaultTimeLocale )
 import qualified Text.CSS.Parse                as CSS
 import qualified Text.CSS.Render               as CSS