Update dependencies, add some todos/notes for future changes

src/graph/split.rs

@@ -1,13 +1,15 @@
-use std::collections::BTreeMap;
-
 use async_trait::async_trait;
 use chrono::DateTime;
+// use polars::io::SerReader;
+// use polars::prelude::ParquetReader;
 use polars::{
     io::SerWriter,
     prelude::{CsvWriter, LazyCsvReader, LazyFileListReader},
 };
 use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
+use std::collections::BTreeMap;
+// use std::fs::File;
 use tempfile::tempfile;
 
 use crate::io::RecordSerializer;
@@ -131,7 +133,11 @@ fn split(
     let mut temp_path = tempfile()?;
 
     // This needs to be done for each split rule with a change column specified
+    // TODO: Add parquet support (both read and write)
+    // let file = File::open(input)?;
+    // let df = ParquetReader::new(file).finish()?;
     let df = LazyCsvReader::new(input).finish()?;
+    // TODO: Needs sorting
     let df = df.sort(["", ""], Default::default());
     CsvWriter::new(&mut temp_path).finish(&mut df.collect()?)?;