Release v2.2: add PyPI classifiers to fix Python version badge

Add comprehensive classifiers (Python versions, license, topics,
OS support) so PyPI displays the correct Python badge and metadata.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: semenko

pyproject.toml

@@ -1,12 +1,26 @@
 [project]
 name = "bam2tensor"
-version = "2.1"
+version = "2.2"
 description = "Convert bisulfite-seq and EM-seq BAM files to sparse tensor representations of DNA methylation"
 authors = [{ name = "Nick Semenkovich", email = "semenko@alum.mit.edu" }]
 license = "MIT"
 readme = "README.md"
 requires-python = ">=3.10"
-classifiers = ["Development Status :: 5 - Production/Stable"]
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Intended Audience :: Science/Research",
+    "License :: OSI Approved :: MIT License",
+    "Operating System :: MacOS",
+    "Operating System :: POSIX :: Linux",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+    "Topic :: Scientific/Engineering :: Bio-Informatics",
+    "Topic :: Scientific/Engineering :: Medical Science Apps.",
+    "Typing :: Typed",
+]
 dependencies = [
     "click>=8.0.1",
     "numpy>=1.26.0",

src/bam2tensor/__init__.py

@@ -50,4 +50,4 @@
     - https://mcwdsi.github.io/bam2tensor for full documentation
 """
 
-__version__ = "2.1"
+__version__ = "2.2"