Update README.md - note about problem with issues

README.md

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+**Problem with old issues:** around January 20, 2025 all old issues (with numbers from 1 to 209) disapeared from the repository. This seems to be some GitHub bug, for which we filed a support ticket. We will update this text once any new information is available. Meanwhile, if you are trying to reach one of these issues by direct link (from the manual, e-mails, wiki pages, other issues, etc.) try using Wayback Machine, e.g. [list of issues on December 2024](http://web.archive.org/web/20241125213737/https://github.com/adda-team/adda/issues) and [search for a specific issue](http://web.archive.org/web/20250000000000*/https://github.com/adda-team/adda/issues/###) (replace ### in the link by issue number). Note, however, that this is not guaranteed to provide the latest state of a particular issue. 
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 <img src='https://raw.githubusercontent.com/wiki/adda-team/adda/img/adda.svg?sanitize=true' align='right'>
 
 ADDA (pronounced /ˈɑddɑ/) is a C software package (console application) to calculate scattering and absorption of electromagnetic waves by particles of arbitrary shape and composition using the discrete dipole approximation (DDA). The particles can be located in a homogeneous medium or near a plane substrate; emission (decay-rate) enhancement of point emitters can also be calculated. The main feature of ADDA is the ability to run on a multiprocessor system or multicore processors (parallelizing a _single_ DDA simulation). It can also employ modern GPUs to accelerate computations. ADDA is intended to be a [versatile tool](https://github.com/adda-team/adda/wiki/Features), suitable for a wide variety of applications ranging from interstellar dust and atmospheric aerosols to metallic nanoparticles and biological cells. Its applicability is limited only by [available computer resources](https://github.com/adda-team/adda/wiki/LargestSimulations).