Remove deprecated unstable_scroll feature

cursive/Cargo.toml

@@ -51,17 +51,16 @@ version = "0.28.1"
 
 [features]
 doc-cfg = ["cursive_core/doc-cfg"]  # Enable doc_cfg, a nightly-only doc feature.
-builder = ["cursive_core/builder"]
-blt-backend = ["dep:bear-lib-terminal"]
-default = ["crossterm-backend"]
-ncurses-backend = ["dep:ncurses", "dep:maplit"]
-pancurses-backend = ["dep:pancurses", "dep:maplit"]
-termion-backend = ["dep:termion"]
-crossterm-backend = ["dep:crossterm"]
-markdown = ["cursive_core/markdown"]
-ansi = ["cursive_core/ansi"]
-unstable_scroll = []  # Deprecated feature, remove in next version
-toml = ["cursive_core/toml"]
+builder = ["cursive_core/builder"]  # Enable the builder module to build views from config blobs.
+blt-backend = ["dep:bear-lib-terminal"]  # Enable the BearLibTerminal backend. Requires BLT to be installed separately.
+default = ["crossterm-backend"]  # Defaults to crossterm, supported on windows, linux and macos.
+ncurses-backend = ["dep:ncurses", "dep:maplit"]  # Enable the ncurses backend.
+pancurses-backend = ["dep:pancurses", "dep:maplit"]  # Enable the pancurses backend.
+termion-backend = ["dep:termion"]  # Enable the termion backend.
+crossterm-backend = ["dep:crossterm"]  # Enable the crossterm backend.
+markdown = ["cursive_core/markdown"]  # Allows parsing StyledString from markdown text.
+ansi = ["cursive_core/ansi"]  # Allows parsing StyledString from ANSI-marked up text.
+toml = ["cursive_core/toml"]  # Allows parsing themes from toml.
 
 [lib]
 name = "cursive"