re-instate julia 1.6 support for now

Author: ablaom

.github/workflows/ci.yml

@@ -17,6 +17,7 @@ jobs:
       fail-fast: false
       matrix:
         version:
+          - '1.6'
           - '1.10'
           - '1'
         os:

Project.toml

@@ -49,7 +49,7 @@ StatisticalTraits = "3"
 Statistics = "<0.0.1, 1"
 StatsBase = "0.32,0.33, 0.34"
 Tables = "0.2,1.0"
-julia = "1.10"
+julia = "1.6"
 
 [extras]
 MLJBase = "a7f614a8-145f-11e9-1d2a-a57a1082229d"