zsh

zsh is a modern shell with lots of customizability and features. Install the following packages:
pacman -S zsh zsh-autosuggestions zsh-completions zsh-history-substring-search zsh-syntax-highlighting
Package
Description
zsh-autosuggestions
Suggests commands as you type based on history and completions
zsh-completions
Additional completion definitions for 
zsh
zsh-history-substring-search
Type any part of any command from history and cycle through matches
zsh-syntax-highlighting
Highlights commands whilst they are typed, helping in reviewing commands before running them