docs: ISO papers reference added to docs and README

README.md

@@ -12,9 +12,15 @@
 
 # `mp-units` - A Physical Quantities and Units library for C++
 
-**The mp-units library might be the subject of ISO standardization for C++29.
-More on this can be found in ISO C++ paper [P1935](https://wg21.link/p1935).
-We are actively looking for parties interested in field trialing the library.**
+**The mp-units library might be the subject of ISO standardization for C++29. More on this can
+be found in the following ISO C++ proposals:**
+
+- [P1935: A C++ Approach to Physical Units](https://wg21.link/p1935),
+- [P2980: A motivation, scope, and plan for a physical quantities and units library](https://wg21.link/p2980),
+- [P2981: Improving our safety with a physical quantities and units library](https://wg21.link/p2981),
+- [P2982: `std::quantity` as a numeric type](https://wg21.link/p2982).
+
+**We are actively looking for parties interested in field-trialing the library.**
 
 [![Open in Gitpod](https://gitpod.io/button/open-in-gitpod.svg)](https://gitpod.io/#https://github.com/mpusz/mp-units)
 

docs/index.md

@@ -1,17 +1,23 @@
 # Welcome to **mp-units**!
 
-**mp-units** is a compile-time enabled feature-rich Modern C++ header-only library that provides
-compile-time dimensional analysis and unit/quantity manipulation. Its key strengths include safety,
-performance, and developer experience.
+**mp-units** is a compile-time enabled feature-rich Modern C++ modular/header-only library that
+provides compile-time dimensional analysis and unit/quantity manipulation. Its key strengths
+include safety, performance, and developer experience.
 
 The library source code is hosted on [GitHub](https://github.com/mpusz/mp-units) with a permissive
 [MIT license](https://github.com/mpusz/units/blob/master/LICENSE.md).
 
-!!! important "Help needed!"
+!!! important "Important: Help needed!"
 
     The **mp-units** library might be the subject of ISO standardization for C++29. More on this can
-    be found in the ISO C++ proposal [P1935](https://wg21.link/p1935). We are actively looking for
-    parties interested in field-trialing the library.
+    be found in the following ISO C++ proposals:
+
+    - [P1935: A C++ Approach to Physical Units](https://wg21.link/p1935),
+    - [P2980: A motivation, scope, and plan for a physical quantities and units library](https://wg21.link/p2980),
+    - [P2981: Improving our safety with a physical quantities and units library](https://wg21.link/p2981),
+    - [P2982: `std::quantity` as a numeric type](https://wg21.link/p2982).
+
+    We are actively looking for parties interested in field-trialing the library.
 
 ??? info "Supported compilers"