Add prick.org for tasks

prick.org

@@ -0,0 +1,18 @@
+#+title: Prick tasks
+#+author: Aryadev Chavali
+#+date: 2025-12-11
+#+filetags: c prick
+
+* prick_darr :prick_darr:
+** TODO Use custom allocator
+Allow users to provide custom allocator functions.  They need to
+provide:
+- alloc
+- realloc
+- free
+* prick_btree :prick_btree:
+** TODO Pack custom user functions into their own structure
+The allocation/print routines should be in their own structure which
+the user passes in.
+
+This means we don't need to have a prick_btree_t structure at all.