UPDATE: Update README to include a minimal ROADMAD

README.md

@@ -2,11 +2,11 @@
 
 IronCalc is a new, modern, work-in-progress spreadsheet engine and set of tools to work with spreadsheets in diverse settings.
 
-This repository contains the main engine and the xlsx importer and exporter.
+This repository contains the main engine and the xlsx reader and writer.
 
-Programmed in Rust, you can use it from a variety of programming languages like [Python](https://github.com/ironcalc/bindings-python), [JavaScript (wasm)](https://github.com/ironcalc/bindings-js), [nodejs](https://github.com/ironcalc/bindings-nodejs) and soon R, Julia, Go and possibly others.
+Programmed in Rust, you will be able to use it from a variety of programming languages like Python, JavaScript (wasm), nodejs and possibly R, Julia or Go.
 
-It has several different _skins_. You can use it in the [terminal](https://github.com/ironcalc/skin-terminal), as a [desktop application](https://github.com/ironcalc/bindings-desktop) or use it in you own [web application](https://github.com/ironcalc/skin-web).
+We will build different _skins_: in the terminal, as a desktop application or use it in you own web application.
 
 # 🛠️ Building
 
@@ -51,9 +51,54 @@ $ cargo doc --no-deps
 > [!WARNING]  
 > This is work-in-progress. IronCalc in developed in the open. Expect things to be broken and change quickly until version 0.5
 
-* We intend to have a working version by mid January 2024 (version 0.5, MVP)
-* Version 1.0.0 will come later in 2024
+Major milestones:
 
+* MVP, version 0.5.0: We intend to have a working version by mid January 2024 (version 0.5, MVP)
+* Stable, version 1.0.0 will come later in December 2024
+
+MVP stands for _Minimum Viable Product_
+
+### Version 0.5 or MVP (15 January 2024)
+
+Version 0.5 includes the engine, javascript and nodejs bindings and a web application
+
+Features of the engine include:
+
+* Read and write xlsx files
+* API to set and read values from cells
+* Implemented 192 Excel functions
+* Time functions with timezones
+* Prepared for i18n but will only support English
+* Wide test coverage
+
+UI features of the web application (backed by the engine):
+
+* Enter values and formulas. Browse mode
+* Italics, bold, underline, horizontal alignment
+* Number formatting
+* Add/remove/rename sheets
+* Copy/Paste extend values
+* Keyboard navigation
+* Delete/Add rows and columns
+* Resize rows and columns
+* Correct scrolling and navigation
+
+### Version 1.0 or Stable (December 2024)
+
+Minor milestones in the ROADMAD for version 1.0.0 (engine and UI):
+
+* Implementation of arrays and array formulas
+* Formula documentation and context help
+* Merge cells
+* Pivot tables
+* Define name manager (mostly UI)
+* Update main evaluation algorithm with a support graph
+* Dynamic arrays (SORT, UNIQUE, ..)
+* Full i18n support with different locales and languages
+* Python bindings
+* Full test coverage
+
+I will be creating issues during the first two months of 2024
 
 # License