update release notes

Author: dsyme

RELEASE_NOTES.md

@@ -1,5 +1,16 @@
 # Release Notes
 
+## 8.0.0 - Feb 25 2026
+
+- Add PreferFloats static parameter to CsvProvider (#1655)
+- Add With* methods to CsvProvider Row and JsonProvider record types (closes #1431) (#1639)
+- Add DtdProcessing static parameter to XmlProvider (closes #1632) (#1635)
+- Add OmitNullFields static parameter to JsonProvider (closes #1245) (#1638)
+- Add UseOriginalNames parameter to XmlProvider (#1629)
+- Fix HTML parser dropping whitespace between inline elements (issue #1330) (#1630)
+- Fix HtmlNode.ToString: preserve whitespace in elements nested inside <pre> (closes #1509)
+- Fix CSV schema parsing: column names with parentheses no longer corrupt type annotation (fixes #946)
+
 ## 7.0.1
 
 - Revert "fix potential XXE vulnerability in XML parsing by @Thorium in #1596"