MoreCommandsPlugin

Hello!
This is my first plugin. Every important info is down below.

/Commands:

/fly (aliases : [f]) //Enables Flight mode.
/god (aliases : [g]) //Makes the player Invincible.
/vanish (aliases : [va]) //Makes the player Invisible.
/feed (aliases : [feedme, fm]) //Feeds the player.
/heal (aliases : [healme, hm]) //Heals the player.
/shout (aliases : [sh] ) //A Shout.
/killmyself (aliases : [km] ) //Kills yourself.
/flyspeed (aliases : [fs] ) //Changes flying speed.
/walkspeed (aliases : [ws] ) //Changes walk speed.

Permissions:

morecommandsplugin.fly //Default : Op
morecommandsplugin.god //Default : Op
morecommandsplugin.vanish //Default : Op
morecommandsplugin.feed //Default : Op
morecommandsplugin.heal //Default : Op
morecommandsplugin.shout //Default : True
morecommandsplugin.killmyself //Default: True
morecommandplugin.flyspeed //Default: Op
(you should use number from 2 to 10 in flyspeed permission, e.g.: morecommandsplugin.flyspeed4)
morecommandplugin.walkspeed //Default: Op

Todo List:

1. Make /Fly <player> usable.
2. Make /God <player> usable.
3. Make 1.7-1.14 support.
4. Make /Shout support spaces.
5. Make /Flyspeed coloured.
6. Make /Seed command. (It is already ingame, but you can use this command only if you have OP.)
7. Make /Flyspeed better. (P.s. in the code you can see permissions : morecommandsplugin.flyspeed2, morecommandsplugin.flyspeed3, morecommandsplugin.flyspeed4 and etc. so, there're same code for 9 different commands, I need to make one code in one command.)
8. Make /Walkspeed better. (same problem with flyspeed.)