Many things

- Remove atty dep and therefore stdin feature
- Rule::RepeatUntilNonePass -> Rule::Repeat
- StopLoopCondition
- Better debug feature
- More base64 trait implementations
- Probably some small stuff

Cargo.toml

@@ -17,7 +17,6 @@ serde_json = "1.0.122"
 url = { version = "2.5.2", features = ["serde"] }
 reqwest = { version = "0.12.5", features = ["blocking", "socks"], optional = true }
 const-str = { version = "0.5.7", optional = true }
-atty = { version = "0.2.14", optional = true }
 thiserror = "1.0.63"
 regex = { version = "1.10.6", optional = true }
 glob = { version = "0.3.1", optional = true }
@@ -41,8 +40,6 @@ default = [
   "default-config",
   "minify-included-strings",
 
-  "stdin",
-
   "regex",
 
   "glob",
@@ -60,9 +57,6 @@ default-config = []
 # Replace all whitepace in the default config with just one space.
 minify-included-strings = ["dep:const-str"]
 
-# Allow reading URLs from STDIN.
-stdin = ["dep:atty"]
-
 # Enables [`url_cleaner::glue::RegexWrapper`].
 regex = ["dep:regex", "dep:regex-syntax"]