Note: if you want the latest release of this mod, please use the Quick Elytra Reborn. It is a full rewrite of this mod.
/mod/quick_hotkeys
https://www.curseforge.com/minecraft/mc-mods/quick-hotkeys

Quick Elytra

Quick Elytra adds 'Quality of Life' changes such as adding keybinds that swap items in your inventory.

Features

A keybind that lets you swap your equipped elytra/chestplate. (v1.0.0)
It prioritises equipment with the most enchantments/enchantment levels and durability.
The default keybind is 'G' but it can easily be changed in the keybind control settings.
A keybind that puts a Totem of Undying in your offhand if you don't already have one equipped. (v2.0.0)
The default keybind is 'X' but it can easily be changed in the keybind control settings.
Auto replant crops that are mined by a hoe. Use the config in the mod menu to change its functionality. (v3.0.0)
This is untested on multiplayer servers so use at your own risk.