Correction to support Julia 1.10 and putting back the tests with the …

…latest Julia version (#1125)

.github/workflows/ci.yml

@@ -14,10 +14,8 @@ jobs:
       fail-fast: false
       matrix:
         version:
-          - '1.6.7' # minimum Julia version that your package supports. (new LTS)
-          - '1.8.5' # "work" version for Atoptima deployements 
-          #- '1' # Leave this line unchanged. '1' will automatically expand to the latest stable 1.x release of Julia.
-                 # for the moment, latest stable version 1.10 errors, we need to repair it
+          - '1.6' # minimum Julia version that your package supports. (new LTS)
+          - '1' # Leave this line unchanged. '1' will automatically expand to the latest stable 1.x release of Julia.                 
         os:
           - ubuntu-latest
         arch:

src/MathProg/vcids.jl

@@ -73,7 +73,7 @@ Base.promote_rule(::Type{<:Id}, ::Type{<:Id}) = Int
 # existing ids.
 # As we want that all operations on ids results on operations on the uid,
 # we redefine the promotion mechanism for Ids so that operations on Ids return integer:
-Base.promote_type(::Type{I}, ::Type{I}) where {I<:Id} = Int32
+Base.promote_type(::Type{I}, ::Type{I}) where {I<:Id} = Int
 
 Base.convert(::Type{Int}, id::I) where {I<:Id} = Int(id.uid)
 Base.convert(::Type{Int32}, id::I) where {I<:Id} = id.uid