https://wiki.archlinux.org/index.php/Partial_upgrades#Partial_upgrades_are_unsupported

You should never `pacman -Sy <pkg>`, Arch users are expected
to keep their system already up-to-date before installing anything.

Close #1251

@amaravora

Close #1273

@codingCoffee

* Document inverse prefix exact match search syntax.

* Reorder search syntax table to explain basic exact match first.

I've decided not to take more donations.

Thanks to everyone who has supported my projects.

Edgar Hipp
Eyal Levin
Philip Stewart
James O'Beirne
Minh Triet Ly
Victor Alvarez
Max Hung
Gearoid Murphy
Aaron Taylor
Brett Bender
Phil Thompson
Anders Damsgaard

The `Respecting .gitignore` link pointed to a section of the readme which no longer exists.

- https://github.com/sharkdp/fd
- https://mike.place/2017/fzf-fd/

/cc @williamsmj

Since https://github.com/BurntSushi/ripgrep/issues/200 is fixed in
0.7.1, we can safely suggest ripgrep as the candidate generator as it
has a more precise implementation of gitignore filtering than the silver
searcher.

Related: #1072
/cc @janlazo

/cc @chrisjohnson

Close #1067
Close #1083

Close #1017

Removed outdated animated GIF.

See #944

Add PayPal donation button

Close #893

Thanks to @majkinetor. Close #869.

CTRL-R binding used to start with --no-sort to list the matched commands
in chronological order. However, it has been a constant source of
confusion. Let's enable it by default from now on. The sorted result
shouldn't be too confusing as we use --tiebreak=index.

Goes well with --height