Update docs for dataframe+database feature change (#679)

Author: rgwood

book/dataframes.md

@@ -1,13 +1,7 @@
 # Dataframes
 
-::: tip
-The dataframe commands are available from version 0.33.1 onwards
-:::
-
 ::: warning
-To use the dataframe support you need a fully-featured build with `cargo build --features extra`.
-Most binary releases like the one provided via [GitHub](https://github.com/nushell/nushell/releases) should already include this.
-[See the installation instructions](/book/installation.md) for further details.
+To use the dataframe support you need a fully-featured build with `cargo build --features dataframe`. Starting with version 0.72, dataframes are *not* included with binary releases of Nushell. [See the installation instructions](/book/installation.md) for further details.
 :::
 
 As we have seen so far, Nushell makes working with data its main priority.

book/installation.md

@@ -80,7 +80,7 @@ Nu releases are published as source to the popular Rust package registry [crates
 
 That's it! The `cargo` tool will do the work of downloading Nu and its source dependencies, building it, and installing it into the cargo bin path so we can run it.
 
-If you want to install with more features, you can install using the `--features=extra` flag, which includes support for dataframes, and sqlite databases.
+If you want to install with support for [dataframes](dataframes.md), you can install using the `--features=dataframe` flag.
 
 @[code](@snippets/installation/cargo_install_nu_more_features.sh)
 

book/loading_data.md

@@ -45,7 +45,7 @@ Nu currently supports the following formats for loading data directly into table
 - json
 - [nuon](#nuon)
 - ods
-- [SQLite databases](#sqlite) (requires `--features extra` build)
+- [SQLite databases](#sqlite)
 - ssv
 - toml
 - tsv
@@ -238,12 +238,6 @@ license = "MIT"
 
 ## SQLite
 
-::: warning
-To use the SQLite support you need a fully-featured build with `cargo build --features extra`.
-Most binary releases like the one provided via [GitHub](https://github.com/nushell/nushell/releases) should already include this.
-[See the installation instructions](/book/installation.md) for further details.
-:::
-
 SQLite databases are automatically detected by [`open`](commands/open.md), no matter what their file extension is. You can open a whole database:
 
 ```

snippets/installation/build_nu_from_source.sh

@@ -1,2 +1,2 @@
 > cd nushell
-nushell> cargo build --workspace --features=extra && cargo run --features=extra
+nushell> cargo build --workspace && cargo run

snippets/installation/build_nu_from_source_release.sh

@@ -1 +1 @@
-nushell> cargo build --release --workspace --features=extra && cargo run --release --features=extra
+nushell> cargo build --release --workspace && cargo run --release

snippets/installation/build_nu_yourself.sh

@@ -1,3 +1,3 @@
 > git clone https://github.com/nushell/nushell.git
 > cd nushell
-nushell> cargo install --path . --features=extra
+nushell> cargo install --path .

snippets/installation/cargo_install_nu_features_stable.sh

@@ -1 +1 @@
-> cargo install nu --features=extra
+> cargo install nu --features=dataframe