update changelog

Author: sbillinge

CHANGELOG.rst

@@ -4,6 +4,85 @@ Release Notes
 
 .. current developments
 
+3.6.0
+=====
+
+**Added:**
+
+* unit tests for initializing DiffractionObject with empty array in xarray and yarray
+* function to return the index of the closest value to the specified value in an array.
+* functions to convert between d and q
+* catch division by zero warning messages in tests
+* functionality to raise useful warning and error messages during angular conversion between two theta and q
+* Improved API documentation in `DiffractionObject` methods and properties using the NumPy docstring format and PEP 256
+* validate xtype belongs to XQUANTITIES during DiffractionObject init
+* Group's Pytest practices for using @pytest.mark.parametrize in test_diffraction_objects.py
+* unit tests for __add__ operation for DiffractionObject
+* Better wording on the capture user info functionality
+* Spelling check via Codespell in pre-commit
+* prettier pre-commit hook for automatic linting of .yml, .json, and .md files
+* Function that can be used to compute muD (absorption coefficient) from a file containing an absorption profile
+from a line-scan through the sample
+* sbillinge username as the authorized admin for GitHub release workflow in `build-wheel-release-upload.yml`
+* function to compute x-ray attenuation coefficient (mu) using XrayDB
+* class docstring for `DiffractionObject`
+* docforamtter in pre-commit for automatic formatting of docstrings to PEP 257
+* Function nsinterp for automatic interpolation onto the Nyquist-Shannon grid.
+* functionality to return the 2D array based on the specified xtype
+* functionality in dump to allow writing data on dspace
+* addition, multiplication, subtraction, and division operators between two DiffractionObject instances or a scalar value with another DiffractionObject for modifying yarray (intensity) values.
+* functionality to rescale diffraction objects, placing one on top of another at a specified point
+* new feature in `scale_to()`: default scaling is based on the max q-value in each diffraction object.
+* functions to convert between d and tth
+* unit test for expected warning when no wavelength is provided for DiffractionObject init
+* copy() method for DiffractionObject instance
+* docstrings for `on_q`, `on_tth`, `on_d`, and `dump` in `diffraction_objects.py`.
+* prevent direct modification of `all_arrays` using `@property`
+* Information on how to update the default user information
+* Example docs for basic DiffractionObject usage
+* deploy github pages documentation on pre-release
+* Gettable `id` property to `DiffractionObject`
+
+**Changed:**
+
+* Refactor get_user_info to separate the tasks of getting the info from config files
+and creating config files when they are missing.
+* test comment format with compact style without extra line for each comment
+* Rename `input_scattering_quantity` to `input_data` in `DiffractionObject` init
+* refactor `q_to_tth()` and `tth_to_q()` into `diffpy.utils.transforms` to make them available outside
+DiffractionObject
+* Moved resampler out of parsers, new path is diffpy.utils.resampler
+* Rename the `isfloat` function to `is_number`, and move it to the `diffpy/utils/utilsvalidators.py` directory
+* arrays and attributes now can be inserted when a DiffractionObject is instantiated
+* data are now stored as a (len(x),4) numpy array with intensity in column 0, the q, then tth, then d
+* `DiffractionObject.on_q`, `...on_tth` and `...on_d` are now methods and called as `DiffractionObject.on_q()` etc.`
+* \tests directory tree to match \src
+* DiffractionObject's "id" property renamed to "uuid"
+* `DiffractionObject` requires 3 input parameters of `xarray`, `yarray`, `xtype`, to be instantiated.  It can be instantiated with empty arrays.
+* Paths in our documentation reflect changes made in code.
+* Enumerated list for the different ways to set user information
+
+**Deprecated:**
+
+* `resample` function in resampler. Replaced with `wsinterp` with better functionality.
+* Diffraction_object class, renamed to DiffractionObject
+
+**Fixed:**
+
+* additional information to users to relieve frustration in finding how to update global config
+* Unittest to Pytest migration for test_loaddata.py
+* file paths of the test files according to new \tests directory tree
+* Typo for get_package_info example
+* return type of `get_array_index` method in `DiffractionObject` to return integer instead of list
+
+**Removed:**
+
+* scattering_objects layer in importing diffraction_objects
+* `user_config.py`. Replaced by `_load_config` and `check_and_build_global_config` in `tools.py`.
+* Relative imports in parser's __init__.py
+* `set_angles_from_list`, `set_angles_from`, `set_qs_from_range` methods in `DiffractionObject`
+
+
 3.5.0
 =====