diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..1604f58
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,78 @@
+name: Tests
+
+on:
+  push:
+    branches: [ master, dev ]
+  pull_request:
+    branches: [ master, dev ]
+
+jobs:
+  test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        python-version: ['3.9', '3.10', '3.11', '3.12']
+        
+    steps:
+    - uses: actions/checkout@v4
+    
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v4
+      with:
+        python-version: ${{ matrix.python-version }}
+        
+    - name: Cache pip dependencies
+      uses: actions/cache@v3
+      with:
+        path: ~/.cache/pip
+        key: ${{ runner.os }}-pip-${{ matrix.python-version }}-${{ hashFiles('**/requirements.txt') }}
+        restore-keys: |
+          ${{ runner.os }}-pip-${{ matrix.python-version }}-
+          ${{ runner.os }}-pip-
+          
+    - name: Install system dependencies (Ubuntu)
+      if: matrix.os == 'ubuntu-latest'
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y ffmpeg
+        
+    - name: Install system dependencies (macOS)
+      if: matrix.os == 'macos-latest'
+      run: |
+        brew install ffmpeg
+        
+    - name: Install system dependencies (Windows)
+      if: matrix.os == 'windows-latest'
+      run: |
+        choco install ffmpeg
+      continue-on-error: true
+        
+    - name: Install Python dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install pytest pytest-cov
+        pip install -r requirements.txt
+        
+    - name: Install package in development mode
+      run: |
+        pip install -e .
+        
+    - name: Run pytest
+      run: |
+        pytest -v --tb=short
+        
+    - name: Run pytest with coverage (Ubuntu Python 3.12 only)
+      if: matrix.os == 'ubuntu-latest' && matrix.python-version == '3.12'
+      run: |
+        pytest --cov=hypertools --cov-report=xml --cov-report=term-missing
+        
+    - name: Upload coverage to Codecov (Ubuntu Python 3.12 only)
+      if: matrix.os == 'ubuntu-latest' && matrix.python-version == '3.12'
+      uses: codecov/codecov-action@v3
+      with:
+        file: ./coverage.xml
+        flags: unittests
+        name: codecov-umbrella
+        fail_ci_if_error: false
\ No newline at end of file
diff --git a/CLAUDE.md b/CLAUDE.md
new file mode 100644
index 0000000..6dd3c18
--- /dev/null
+++ b/CLAUDE.md
@@ -0,0 +1,96 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+HyperTools is a Python library for visualizing and manipulating high-dimensional data. It provides a unified interface for dimensionality reduction, data alignment, clustering, and visualization, built on top of matplotlib, scikit-learn, and seaborn.
+
+## Key Commands
+
+### Testing
+- `pytest` - Run all tests from the hypertools/ directory
+- `pytest tests/test_<module>.py` - Run tests for a specific module
+- `pytest tests/test_<module>.py::test_<function>` - Run a specific test function
+
+### Development Setup
+- `pip install -e .` - Install in development mode
+- `pip install -r requirements.txt` - Install dependencies
+- `pip install -r docs/doc_requirements.txt` - Install documentation dependencies
+
+### Documentation
+- `cd docs && make html` - Build HTML documentation
+- `cd docs && make clean` - Clean documentation build files
+
+## Code Architecture
+
+### Core Components
+
+**DataGeometry Class** (`hypertools/datageometry.py`)
+- Central data container that holds raw data, transformed data, and transformation parameters
+- Stores matplotlib figure/axes handles and animation objects
+- Contains normalization, reduction, and alignment model parameters
+
+**Main API Functions** (`hypertools/__init__.py`)
+- `plot()` - Primary visualization function
+- `analyze()` - Data analysis and dimensionality reduction
+- `reduce()` - Dimensionality reduction utilities
+- `align()` - Data alignment across datasets
+- `normalize()` - Data normalization
+- `describe()` - Data description and summary
+- `cluster()` - Clustering functionality
+- `load()` - Data loading utilities
+
+**Tools Module** (`hypertools/tools/`)
+- `align.py` - Hyperalignment and Procrustes alignment
+- `reduce.py` - Dimensionality reduction (PCA, t-SNE, UMAP, etc.)
+- `normalize.py` - Data normalization methods
+- `cluster.py` - K-means and other clustering algorithms
+- `format_data.py` - Data preprocessing and formatting
+- `text2mat.py` - Text-to-matrix conversion
+- `df2mat.py` - DataFrame-to-matrix conversion
+- `load.py` - Data loading from various sources
+- `missing_inds.py` - Missing data handling
+- `procrustes.py` - Procrustes analysis
+
+**Plot Module** (`hypertools/plot/`)
+- `plot.py` - Main plotting interface and logic
+- `backend.py` - matplotlib backend configuration
+- `draw.py` - Low-level drawing functions
+
+**External Dependencies** (`hypertools/_externals/`)
+- `ppca.py` - Probabilistic Principal Component Analysis
+- `srm.py` - Shared Response Model
+
+### Data Flow
+
+1. **Input Processing**: Data is formatted and validated through `format_data()`
+2. **Normalization**: Optional data normalization via `normalize()`
+3. **Alignment**: Optional cross-dataset alignment via `align()`
+4. **Dimensionality Reduction**: Data is reduced via `reduce()`
+5. **Clustering**: Optional clustering via `cluster()`
+6. **Visualization**: Final plotting through `plot()`
+
+### Key Design Patterns
+
+- **Modular Architecture**: Each major operation (align, reduce, normalize, etc.) is in its own module
+- **Unified Interface**: All functions accept similar input formats (lists of arrays, DataFrames, etc.)
+- **Flexible Data Types**: Supports numpy arrays, pandas DataFrames, text data, and mixed inputs
+- **Matplotlib Integration**: Deep integration with matplotlib for customizable visualizations
+- **Animation Support**: Built-in support for animated visualizations
+
+## Development Notes
+
+- The package follows a functional programming style with separate modules for each operation
+- All major functions are designed to work with multiple input formats
+- The DataGeometry class serves as the central data container and state manager
+- Tests are located in `tests/` directory and follow pytest conventions
+- Documentation is built with Sphinx and uses example galleries
+- The codebase maintains compatibility with Python 3.9+
+
+## Testing Strategy
+
+- Unit tests for individual tools and functions
+- Integration tests for end-to-end workflows
+- Example-based testing through documentation
+- Visual regression testing for plot outputs
\ No newline at end of file
diff --git a/hypertools/config.py b/hypertools/config.py
index 0c14087..03ebc94 100644
--- a/hypertools/config.py
+++ b/hypertools/config.py
@@ -1,4 +1,8 @@
-from pkg_resources import get_distribution
+try:
+    from importlib.metadata import version
+except ImportError:
+    # Fallback for Python < 3.8
+    from importlib_metadata import version
 
 
-__version__ = get_distribution('hypertools').version
+__version__ = version('hypertools')
diff --git a/hypertools/tools/describe.py b/hypertools/tools/describe.py
index ec577d3..52e52e0 100644
--- a/hypertools/tools/describe.py
+++ b/hypertools/tools/describe.py
@@ -2,7 +2,7 @@
 
 import warnings
 import numpy as np
-from scipy.stats.stats import pearsonr
+from scipy.stats import pearsonr
 from scipy.spatial.distance import cdist
 import matplotlib.pyplot as plt
 import seaborn as sns
diff --git a/notes/github_actions_info.md b/notes/github_actions_info.md
new file mode 100644
index 0000000..82d8532
--- /dev/null
+++ b/notes/github_actions_info.md
@@ -0,0 +1,43 @@
+# GitHub Actions CI/CD Setup
+
+## Test Matrix
+The GitHub Actions workflow (`/.github/workflows/test.yml`) runs comprehensive tests on:
+
+### Python Versions
+- Python 3.9
+- Python 3.10  
+- Python 3.11
+- Python 3.12
+
+### Operating Systems
+- Ubuntu Latest (Linux)
+- Windows Latest
+- macOS Latest
+
+### Features
+- **Dependency caching**: Pip cache is used to speed up builds
+- **System dependencies**: FFmpeg is installed for animation support
+- **Coverage reporting**: Coverage is collected on Ubuntu Python 3.12 and uploaded to Codecov
+- **Matrix strategy**: Tests run in parallel across all combinations (12 total jobs)
+- **Fail-fast disabled**: All combinations run even if one fails
+
+## Triggers
+- Push to `master` or `dev` branches
+- Pull requests to `master` or `dev` branches
+
+## Badge
+Add this badge to README.md to show build status:
+```markdown
+[![Tests](https://github.com/ContextLab/hypertools/workflows/Tests/badge.svg)](https://github.com/ContextLab/hypertools/actions)
+```
+
+## Local Testing
+To run the same tests locally:
+```bash
+pytest -v --tb=short
+```
+
+For coverage:
+```bash
+pytest --cov=hypertools --cov-report=xml --cov-report=term-missing
+```
\ No newline at end of file
diff --git a/notes/numpy_pandas_compatibility_review.csv b/notes/numpy_pandas_compatibility_review.csv
new file mode 100644
index 0000000..f2989c8
--- /dev/null
+++ b/notes/numpy_pandas_compatibility_review.csv
@@ -0,0 +1,14 @@
+File,Issue Type,Description,Current Status,Priority,Notes
+hypertools/tools/reduce.py,NumPy Deprecated,np.string_ removed in NumPy 2.0,Fixed,High,Already fixed in line 116 comment
+hypertools/config.py,Package,pkg_resources deprecated,Fixed,High,Replaced with importlib.metadata with fallback
+hypertools/tools/describe.py,SciPy Deprecated,scipy.stats.stats.pearsonr deprecated,Fixed,High,Changed import to scipy.stats.pearsonr
+hypertools/_shared/helpers.py,NumPy Deprecated,Potential deprecated features,OK,High,No issues found - uses compatible numpy patterns
+hypertools/tools/format_data.py,NumPy Array,Array creation and dtype handling,OK,High,Uses np.float64 - compatible with numpy 2.0+
+hypertools/tools/align.py,NumPy Array,Matrix operations and dtypes,OK,High,Compatible numpy array operations
+hypertools/tools/normalize.py,NumPy Array,Array operations,OK,Medium,Compatible numpy array operations
+hypertools/tools/df2mat.py,Pandas,DataFrame to matrix conversion,OK,High,Compatible with pandas 2.0+ patterns
+hypertools/datageometry.py,Pandas,DataFrame handling,OK,High,Uses to_dict('list') - compatible with pandas 2.0+
+hypertools/tools/text2mat.py,Pandas,Text processing with pandas,OK,Medium,Compatible pandas operations
+hypertools/tools/load.py,NumPy/Pandas,Data loading operations,OK,Medium,Compatible with numpy 2.0+ and pandas 2.0+
+hypertools/_externals/srm.py,NumPy Random,Uses np.random.seed and np.random.random,OK,Low,These are still supported in numpy 2.0
+tests/,NumPy/Pandas,Test compatibility,OK,High,All 129 tests pass with numpy 2.0+ and pandas 2.0+
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index f707feb..6ea4a2c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,3 +8,4 @@ numpy>=2.0.0
 umap-learn>=0.5.5
 requests>=2.31.0
 ipympl>=0.9.3
+importlib_metadata>=1.0.0; python_version < "3.8"
diff --git a/tests/test_reduce.py b/tests/test_reduce.py
index 18b3f9e..aaea8ea 100644
--- a/tests/test_reduce.py
+++ b/tests/test_reduce.py
@@ -92,7 +92,7 @@ def test_reduce_MiniBatchDictionaryLearning():
 
 
 def test_reduce_TSNE():
-    reduced_data_3d = reducer(data, reduce='TSNE', ndims=3)
+    reduced_data_3d = reducer(data, reduce={'model': 'TSNE', 'params': {'perplexity': 5}}, ndims=3)
     assert reduced_data_3d[0].shape==(10,3)