disable encoding for unsupported windows platform

Author: johnnychen94

src/ImageInTerminal.jl

@@ -87,6 +87,12 @@ function __init__()
     # use 24bit if the terminal supports it
     lowercase(get(ENV, "COLORTERM", "")) in ("24bit", "truecolor") && use_24bit()
     enable_encoding()
+    
+    if VERSION < v"1.6.0-DEV.888" && Sys.iswindows()
+        # https://discourse.julialang.org/t/image-in-repl-does-not-correct/46359
+        @warn "ImageInTerminal is not supported for Windows platform: Julia at least v1.6.0 is required."
+        disable_encoding()
+    end
 end
 
 end # module