Pycrires

- Added support with Python 3.11 and dropped support for Python 3.7 and 3.8
- The `detection_map` method returns the results so it can be manually plotted
- Added `unique_pairs` keyword to `obs_nodding_irregular` for regular nodding sequences that contain multiple exposures per nod (thanks Hoeijmakers!)
- Use static TW files in case they are not available in the data reduction folder
- Maintenance of the `util_genlines` method
- Changed integer type annotation from `np.int64` to generic `np.int_`
- Updated docstrings and type annotations

- Several routines for the calibration and detection of spatially-resolved sources have been included: `remove_starlight`, `remove_systematics`, and `detection_map` (thanks ricolandman!)
- The `obs_nodding_irregular` method has been added for processing data with an irregular nodding scheme (thanks ricolandman!)
- The `obs_staring` method has been added for processing data obtained in staring mode (thanks DGonzalezPicos!)
- The `extraction_required` parameter has been added to the `obs_nodding` routines for faster processing
- The `util` module has been included for utility functions. For example,`load_bt_settl_template` fetches a BT-Settl spectrum that can be used with `detection_map` (thanks ricolandman!)
- Many small improvements to the overall code and documentation

- Improved extraction and wavelength correction for 2D spectra (thanks ricolandman!) with the `custom_extract_2d` and `correct_wavelengths_2d` methods
- Updated documentation and improvements with code style

- New and improved `Pipeline` methods for calibration and 2D spectral extraction
- Updated documentation pages and tutorial

- Implementation and testing of calibration recipes
- Automatic downloading of missing calibration data
- Support for telluric correction with Molecfit
- Updated documentation and tutorial

- Implementation and testing of `Pipeline` methods
- Tutorial added to the documentation