update docs index

docs/index.md

@@ -1,14 +1,17 @@
 # adtl – another data transformation language
 
-[![](https://img.shields.io/badge/python-3.8+-blue.svg)](https://www.python.org/downloads/)
+[![Python 3.8+](https://img.shields.io/badge/python-3.8+-blue.svg)](https://www.python.org/downloads/)
+[![Python 3.13](https://img.shields.io/badge/python-3.13-red.svg)](https://www.python.org/downloads/release/python-3130/)
+
 [![tests](https://github.com/globaldothealth/adtl/actions/workflows/tests.yml/badge.svg)](https://github.com/globaldothealth/adtl/actions/workflows/tests.yml)
 [![codecov](https://codecov.io/gh/globaldothealth/adtl/branch/main/graph/badge.svg?token=QTD7HRR3TO)](https://codecov.io/gh/globaldothealth/adtl)
 [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
 
 
 adtl is a data transformation language (DTL) used by some applications in
 [Global.health](https://global.health), notably for the ISARIC clinical data pipeline at
-[globaldothealth/isaric](https://github.com/globaldothealth/isaric).
+[globaldothealth/isaric](https://github.com/globaldothealth/isaric) and the InsightBoard
+project dashboard at [globaldothealth/InsightBoard](https://github.com/globaldothealth/InsightBoard)
 
 **adtl is currently a prototype and is subject to major revisions**
 
@@ -18,8 +21,8 @@ Most existing data transformation languages are usually in a XML dialect, though
 there are recent variations in other file formats. In addition, many DTLs use a
 custom domain specific language. The primary utility of this DTL is to provide a
 easy to use library in Python for basic data transformations, which are
-specified in a JSON file. It is not meant to be a comprehensive, and adtl can
-be used as a step within a larger data processing pipeline.
+specified in either a JSON or TOML file. It is not meant to be a comprehensive, and
+adtl can be used as a step within a larger data processing pipeline.
 
 ```{toctree}
 ---