SQLite Release 3.7.3 On 2010-10-08

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Added the sqlite3_create_function_v2() interface that includes a destructor callback.
Added support for custom r-tree queries using application-supplied callback routines to define the boundary of the query region.
The default page cache strives more diligently to avoid using memory beyond what is allocated to it by SQLITE_CONFIG_PAGECACHE. Or if using page cache is allocating from the heap, it strives to avoid going over the sqlite3_soft_heap_limit64(), even if SQLITE_ENABLE_MEMORY_MANAGEMENT is not set.
Added the sqlite3_soft_heap_limit64() interface as a replacement for sqlite3_soft_heap_limit().
The ANALYZE command now gathers statistics on tables even if they have no indices.
Tweaks to the query planner to help it do a better job of finding the most efficient query plan for each query.
Enhanced the internal text-to-numeric conversion routines so that they work with UTF8 or UTF16, thereby avoiding some UTF16-to-UTF8 text conversions.
Fix a problem that was causing excess memory usage with large WAL transactions in win32 systems.
The interface between the VDBE and B-Tree layer is enhanced such that the VDBE provides hints to the B-Tree layer letting the B-Tree layer know when it is safe to use hashing instead of B-Trees for transient tables.
Miscellaneous documentation enhancements.

A complete list of SQLite releases in a single page and a chronology are both also available. A detailed history of every check-in is available at SQLite version control site.