MC Plugin SellAll - Sell everything in one go! V2.0.1/V1.9.2C

Add signs to sell everything in one go!

1.13 compatibility
This plugin was ran on a 1.13 server on 26/07/2018 and no problems were found after the conversion, It seems to be fully compatible, but if any problems occur, please report them to me asap so I can resolve them

Pre-1.13 servers
Download a version below 2.0.0

A server with this plugin live:
altgaming.org

Place a sign, look at it and run the command /sellall create, then go into your plugin folder, open up SellAll go into the signs folder and open up the YML corresponding to the coordinates of the sign, in here you can enable and disable the sign and add items which you can sell at this sign.
(all signs have different items for a different value)

Would add the option to sell gold ingots for 1 "currency", lapis lazuli for 2 "currency" and all other dyes for 1 "currency"
You can add every type of item to every sign, the minecraft items are your limit!
When someone hits a configured sign they will sell all items that are configured for the sign, all items that are in their inventory times the configured price.

You can also use SellAll on the go, just do /sell <shopname> and gone are your unneeded items!
Players can also view the items the shop will sell with /sell show <shopname>

Admin /sell stuff: (everything here requires perm node sellall.admin)
Shops can be created with /sell create <shopname>
Shops can be enabled with /sell enable <shopname>
Shops can be disabled with /sell disable <shopname>
Add items with /sell additem <shopname> <itemname/id>[,subid] <price>
Remove unwanted shops with /sell delete <shopname> (NOT revertable, you can only recreate the whole shop again)
Remove items with /sell removeitem <shopname> <itemname/id>[,subid]
Set the required permission for the shop with /sell setperm <shopname> <newperm>
And view these commands in game with /sell help
These shops can even be copied onto a sign with /sellall import <shopname>!
You can also copy a sign to a shop by using
/sellall export <shopname>

Player stuff:
Everything with /sell requires the node sellall.shop.command
Sell stuff with /sell <shopname> (requires the perm node of the sign, by default sellall.shop.defaultshopperm)
List possible shops with /sell list (requires sellall.shop.list)

General multiplier command:
/sellall multiply <username> <tier> <time>
<username> : The name of the player you want to give a multiplier, you can use WHOLESERVER to give a multiplier to everyone who is online!
<tier> : The amount everything will be multiplied with, everyone has 1 by default, setting it to 2 would double their cash received from sellall signs.
<time> : The time (in seconds) for how long their multiplier would last. You can use infinite to give the multiplier for an infinite amount of time.

Global multipliers:
/sellall multiply WHOLESERVER <tier> <time> [playername]
<tier> : The amount everything will be multiplied with, everyone has 1 by default, setting it to 2 would double their cash received from sellall signs.
<time> : The time (in seconds) for how long their multiplier would last. You can use infinite to give the multiplier for an infinite amount of time.
[playername] : this will be used in some broadcasts around the global mutliplier, this is not required to be used.

Multipliers stack
This is now configurable!

Checking multipliers
You can check if you have an active multiplier in 2 ways
1, if you don't have the perm sellall.admin, just do /sellall, it will instantly be displayed
2, (works for both with and without the perm), just do /sellall multiplier, it will display the same info.
These messages can be edited in the config, with check_multiplier.

Show them on your EzRanks/Featherboard scoreboard and use them in DeluxeChat!

EzRanks:
http://www.spigotmc.org/resources/ezrankslite.762/
%multiplier% : for the multiplier
%multitime% : for the multiplier time

DeluxeChat:
http://www.spigotmc.org/resources/deluxechat.1277/
%sellall_multitier% : for the multiplier
%sellall_multitime% : for the multiplier time

Featherboard (And other @Maximvdw plugins):
https://www.spigotmc.org/resources/mvdwplaceholderapi.11182/
!Requires MVdWPlaceholderAPI to work!
{multitier} for the multiplier
{multitime} for the multiplier time