steps to move to v0.2.21

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "rxing"
-version = "0.2.20"
+version = "0.2.21"
 description="A rust port of the zxing barcode library."
 license="Apache-2.0"
 repository="https://github.com/hschimke/rxing"
@@ -38,11 +38,25 @@ java-rand = "0.2.0"
 rand = "0.8.5"
 
 [features]
-default = ["image", "serde"]
+default = ["image"]
+#/// Enable features required for image manipulation and reading.
 image = ["dep:image", "dep:imageproc"]
+
+#/// Allows the ability to force ISO/IED 18004 compliance.
+#/// Leave disabled unless specificially needed.
 allow_forced_iso_ied_18004_compliance = []
+
+#/// Enable support for writing SVG files
 svg_write = ["dep:svg"]
+
+#/// Enable support for reading SVG files
 svg_read = ["dep:resvg", "image"]
+
+#/// Enable support building this module in WASM
 wasm_support = ["chrono/wasmbind"]
+
+#/// Enable experimental features, risky.
 experimental_features = []
+
+#/// Adds support for serde Serialize and Deserialize for outward facing structs
 serde = ["dep:serde"]