Suggestion: broadcast message

[x1p]

It would be nice if I can somehow give players a message when they join with a lower version.
Example:
Server = 1.15.2
Players can join with 1.14.4 and above.

versions:
  MINECRAFT_1_15_2: true
  MINECRAFT_1_15_1: true
  MINECRAFT_1_15: true
  MINECRAFT_1_14_4: true
  MINECRAFT_1_14_3: false
  ...

Player joins with 1.14.4:
Player receives a message, a few seconds after joining:
Welcome %player%, consider updating to a newer minecraft version to enjoy better gameplay
Player joins with 1.15.x nothing happens
Suggestion for a config section:

message:
- message: "Welcome %player%, consider updating to a newer Minecraft version to enjoy better gameplay"
  before: Minecraft 1.15.0