Add release overview and pypi badge (#1223)

Author: anwai98

README.md

@@ -1,4 +1,5 @@
 [![DOC](https://shields.mitmproxy.org/badge/docs-pdoc.dev-brightgreen.svg)](https://computational-cell-analytics.github.io/micro-sam/)
+[![PyPI](https://img.shields.io/pypi/v/micro_sam.svg)](https://pypi.org/project/micro_sam/)
 [![Conda](https://anaconda.org/conda-forge/micro_sam/badges/version.svg)](https://anaconda.org/conda-forge/micro_sam)
 [![codecov](https://codecov.io/gh/computational-cell-analytics/micro-sam/graph/badge.svg?token=7ETPP5CABP)](https://codecov.io/gh/computational-cell-analytics/micro-sam)
 [![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.7919746.svg)](https://doi.org/10.5281/zenodo.7919746)

RELEASE_OVERVIEW.md

@@ -1,5 +1,13 @@
 # Release Overview
 
+**New in version 1.8.1**
+
+Rename the package to `micro_sam` on PyPI (now installable via `pip install micro_sam`).
+
+**New in version 1.8.0**
+
+`micro_sam` is now available on PyPI, alongside minor documentation updates.
+
 **New in version 1.7.7**
 
 Fixes for tiled NMS and MPS inference, plus a new example for instance segmentation-only finetuning.