[#12] Support latest 2 GHC versions (#13)

* [#12] Support latest 3 GHC versions

Resolves #12

* Fix GHC-8.2.2

* Drop GHC-8.2.2

Author: Dmitrii Kovanikov

.travis.yml

@@ -12,12 +12,12 @@ cache:
   - "$HOME/.stack"
   - "$TRAVIS_BUILD_DIR/.stack-work"
 
-# add PostgreSQL with version 10
 services:
   - postgresql
 
 matrix:
   include:
+  - ghc: 8.4.4
   - ghc: 8.6.5
 
   - ghc: 8.6.5

postgresql-simple-named.cabal

@@ -28,14 +28,15 @@ category:            Database
 build-type:          Simple
 extra-doc-files:     README.md
                    , CHANGELOG.md
-tested-with:         GHC == 8.6.5
+tested-with:         GHC == 8.4.4
+                   , GHC == 8.6.5
 
 source-repository head
   type:                git
   location:            https://github.com/Holmusk/postgresql-simple-named.git
 
 common common-options
-  build-depends:       base ^>= 4.12.0.0
+  build-depends:       base >= 4.11 && < 4.13
 
   ghc-options:         -Wall
                        -Wincomplete-uni-patterns