drop support for GHC < 8.8

Author: TeofilC

.github/workflows/ci.yml

@@ -13,9 +13,6 @@ jobs:
           - '9.0.2'
           - '8.10.3'
           - '8.8.4'
-          - '8.6.5'
-          - '8.4.4'
-          - '8.2.2'
         cabal:
           - '3.6'
         os:
@@ -105,9 +102,6 @@ jobs:
           - '9.0.2'
           - '8.10.3'
           - '8.8.4'
-          - '8.6.5'
-          - '8.4.4'
-          - '8.2.2'
         cabal:
           - '3.6'
         os:

threadscope.cabal

@@ -36,10 +36,7 @@ Data-files:          threadscope.ui, threadscope.png
 Extra-source-files:  include/windows_cconv.h
                      README.md
                      CHANGELOG.md
-Tested-with:         GHC == 8.2.2
-                     GHC == 8.4.4
-                     GHC == 8.6.5
-                     GHC == 8.8.4
+Tested-with:         GHC == 8.8.4
                      GHC == 8.10.3
                      GHC == 9.0.2
                      GHC == 9.2.2