Update 4.4 release notes

Author: kriszyp

docs/SUMMARY.md

@@ -122,6 +122,9 @@
   * [Storage Algorithm](technical-details/reference/storage-algorithm.md)
 * [Release Notes](technical-details/release-notes/README.md)
   * [HarperDB Tucker (Version 4)](technical-details/release-notes/4.tucker/README.md)
+    * [4.4.21](technical-details/release-notes/4.tucker/4.4.21.md)
+    * [4.4.20](technical-details/release-notes/4.tucker/4.4.20.md)
+    * [4.4.19](technical-details/release-notes/4.tucker/4.4.19.md)
     * [4.4.18](technical-details/release-notes/4.tucker/4.4.18.md)
     * [4.4.17](technical-details/release-notes/4.tucker/4.4.17.md)
     * [4.4.16](technical-details/release-notes/4.tucker/4.4.16.md)

docs/technical-details/release-notes/4.tucker/4.4.19.md

@@ -0,0 +1,7 @@
+### HarperDB 4.4.19
+2/4/2025
+
+* LMDB upgrade for free-list verification on commit
+* Add check to avoid compacting database multiple times with compactOnStart
+* Fix handling of denied/absent subscription
+* Add support for including symlinked directories in packaging a deployed component

docs/technical-details/release-notes/4.tucker/4.4.20.md

@@ -0,0 +1,4 @@
+### HarperDB 4.4.20
+2/11/2025
+
+* LMDB upgrade for improved handling of page boundaries with free-space lists

docs/technical-details/release-notes/README.md

@@ -4,6 +4,12 @@
 
 [Meet Tucker](./4.tucker/tucker.md) Our 4th Release Pup
 
+[4.4.21 Tucker](4.tucker/4.4.21.md)
+
+[4.4.20 Tucker](4.tucker/4.4.20.md)
+
+[4.4.19 Tucker](4.tucker/4.4.19.md)
+
 [4.4.18 Tucker](4.tucker/4.4.18.md)
 
 [4.4.17 Tucker](4.tucker/4.4.17.md)