docs: Add changelog.

CHANGELOG.md

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+# Changelog
+
+## 1.0.16 - 2024-07-19
+
+_Download of collected data donations is only possible through the API not through the admin interface. 
+Fix and comprehensive documentation will be released in a subsequent version._
+
+### Changed
+
+- Improve robustness of extraction operators: ([`5b3a0af`](https://github.com/uzh/ddm/commit/5b3a0af), [`855796f`](https://github.com/uzh/ddm/commit/855796f)) 
+
+    - Detect and convert date-strings (in ISO, RFC2822, or HTTP format) to date objects for greater/smaller-comparisons.
+    - Detect and convert numeric-strings to numbers for 'greater/smaller'-comparisons.
+    - Exclude strings from 'greater/smaller'-comparisons.
+    - Convert all variable types to string before regex comparison functions.
+- Update appearance of donation instructions. ([`8cb4d79`](https://github.com/uzh/ddm/commit/8cb4d79), [`0b90ea2`](https://github.com/uzh/ddm/commit/0b90ea2))
+- Limit the number of times an error with the same code is posted in an upload attempt from the participation interface to the server to 5. ([`56d30ff`](https://github.com/uzh/ddm/commit/56d30ff))
+- Display extraction rules ordered according to the execution order (instead of their IDs). ([`776b384`](https://github.com/uzh/ddm/commit/776b384))
+- Improve clarity of administration interface by adding collapsibles for additional information. ([`6a851d2`](https://github.com/uzh/ddm/commit/6a851d2), [`0745f6c`](https://github.com/uzh/ddm/commit/0745f6c))
+- Change `DonationProject.date_created` to readonly in admin view. ([`a851042`](https://github.com/uzh/ddm/commit/a851042))
+
+
+### Added
+
+- Add option for "all-in-one consent" to File Uploader. ([`e0b78c7`](https://github.com/uzh/ddm/commit/e0b78c7))
+- Add description of extraction operators to documentation. ([`a4810c1`](https://github.com/uzh/ddm/commit/a4810c1))
+- Add three new types of extraction errors related to regex extraction operators. ([`4b6152e`](https://github.com/uzh/ddm/commit/4b6152e))
+- Add tests for vue extraction functions. ([`4bad2c7`](https://github.com/uzh/ddm/commit/4bad2c7),[`eb0de44`](https://github.com/uzh/ddm/commit/eb0de44))
+
+### Removed
+
+- Remove the `get_simple_bar_plot` template tag and bokeh dependency. ([`57696d6`](https://github.com/uzh/ddm/commit/57696d6))
+
+### Fixed
+
+- Change type of `EventLogEntry.description` from CharField to TextField to allow the posting of longer event descriptions. ([`d0d1c7d`](https://github.com/uzh/ddm/commit/d0d1c7d))
+- Start data entry count from 1 instead of 0 in the data donation feedback navigation. ([`88e9295`](https://github.com/uzh/ddm/commit/88e9295)) 
+- Fix bug that has limited the number of extraction rules to 10 and remove this limitation. ([`d9ef58c`](https://github.com/uzh/ddm/commit/d9ef58c))