Suggest minimum bat version in manual (#1941)

- make explicit mention of which bat version should be installed in the
  "Installation" and "Supported languages and themes" sections of the
  manual

- add missing "Tips & tricks" page

See #1712 for context.

manual/src/installation.md

@@ -97,3 +97,5 @@ Users of older MacOS versions (e.g. 10.11 El Capitan) should install using Homeb
 Behind the scenes, delta uses [`less`](https://www.greenwoodsoftware.com/less/) for paging.
 It's important to have a reasonably recent version of less installed.
 On MacOS, install `less` from Homebrew. For Windows, see [Using Delta on Windows](./tips-and-tricks/using-delta-on-windows.md).
+
+If you use [`bat`](https://github.com/sharkdp/bat) and are running `bat cache --build` to install custom themes or language syntaxes then you should install the same version of bat as specified in the [`Cargo.toml`](https://github.com/dandavison/delta/blob/main/Cargo.toml) for the delta release you're using, otherwise delta will crash with a [memory error](https://github.com/dandavison/delta/issues/1712). The current version of delta does not work with bat v0.18.3 or prior versions.

manual/src/supported-languages-and-themes.md

@@ -7,6 +7,7 @@ To add your own custom color theme, or language, please follow the instructions
 - [Adding a custom language](https://github.com/sharkdp/bat/#adding-new-syntaxes--language-definitions)
 - [Adding a custom theme](https://github.com/sharkdp/bat/#adding-new-themes)
 
-Delta automatically recognizes custom themes and languages added to bat. You will need to install bat in order to run the `bat cache --build` command.
+Delta automatically recognizes custom themes and languages added to bat. You will need to install bat in order to run the `bat cache --build` command. Ideally, the version of bat you install should match the version specified in delta's [`Cargo.toml`](https://github.com/dandavison/delta/blob/main/Cargo.toml) for the delta release you're using. There are [known problems](https://github.com/dandavison/delta/issues/1712) with bat v0.18.3 and below.
 
 The languages and color themes that ship with delta are those that ship with bat. So, to propose a new language or color theme for inclusion in delta, it would need to be a helpful addition to bat, in which case please open a PR against bat.
+

manual/src/tips-and-tricks.md

@@ -0,0 +1,5 @@
+# Tips & tricks
+
+Delta has a number of options to configure the appearance and behavior of the user interface, and integrate with other programs, including the programmable completion features of various shells.
+
+The following sections discuss these features and integrations.