UPDATE: Adds 'user model' API (#27)

* bump version for documentation
* Fixes wrong doc comment
* renames old APIs to be consistent

xlsx/src/import/mod.rs

@@ -16,8 +16,8 @@ use std::{
 use roxmltree::Node;
 
 use ironcalc_base::{
-    model::Model,
     types::{Metadata, Workbook, WorkbookSettings},
+    Model,
 };
 
 use crate::error::XlsxError;