Mods with "factorio_version": "0.13" in its info.json can still work in Factorio 0.14 if its "dependencies" is empty.
But if "dependencies" is not empty, even if the mod does not depend on the base mod, the mod is marked as incompatible.
Steps to reproduce:
1) Download the following unofficial releases of my mods: Both of them have "factorio_version": "0.13".
Color Picker has empty "dependencies".
Player Color depends on Color Picker.
2) Launch Factorio 0.14.
3) Check the installed mods, you will find Color Picker is enabled while Player Color is not.
Expected:
Either both of them are disabled because of "factorio_version": "0.13", or
both of them are enabled because they don't depend on the base mod.
I prefer the second option.

(Or third option: "factorio_version": "0.13" also works in Factorio 0.14 so even mods that depend on the base mod can also work in 0.14)