update travis

.travis.yml

@@ -33,17 +33,6 @@ script:
   set +ex
 matrix:
   include:
-  - env: BUILD=cabal GHCVER=8.6.5 CABALVER=2.4 HAPPYVER=1.19.5 ALEXVER=3.1.7
-    addons:
-      apt:
-        sources:
-        - hvr-ghc
-        packages:
-        - cabal-install-2.4
-        - ghc-8.6.5
-        - happy-1.19.5
-        - alex-3.1.7
-    compiler: ': #GHC 8.6.5'
   - env: BUILD=cabal GHCVER=head  CABALVER=head HAPPYVER=1.19.5 ALEXVER=3.1.7
     addons:
       apt:
@@ -61,12 +50,6 @@ matrix:
         packages:
         - libgmp-dev
     compiler: ': #stack default'
-  - env: BUILD=stack ARGS="--resolver lts-13"
-    addons:
-      apt:
-        packages:
-        - libgmp-dev
-    compiler: ': #stack 8.6.5'
   - env: BUILD=stack ARGS="--resolver nightly"
     addons:
       apt:
@@ -76,9 +59,6 @@ matrix:
   - env: BUILD=stack ARGS=""
     os: osx
     compiler: ': #stack default osx'
-  - env: BUILD=stack ARGS="--resolver lts-13"
-    os: osx
-    compiler: ': #stack 8.6.5 osx'
   - env: BUILD=stack ARGS="--resolver nightly"
     os: osx
     compiler: ': #stack nightly osx'

package.yaml

@@ -5,7 +5,7 @@ license:             BSD3
 author:              "Justin Le"
 maintainer:          "justin@jle.im"
 copyright:           "(c) Justin Le 2018"
-tested-with:         GHC >= 8.6
+tested-with:         GHC >= 8.8
 
 extra-source-files:
 - README.md