Log Message:
Release 3.13.0:

Postpone I/O associated with TEMP files for as long as possible, with the hope \ 
that the I/O can ultimately be avoided completely.
Merged the session extension into trunk.
Added the ".auth ON|OFF" command to the command-line shell.
Added the "--indent" option to the ".schema" and \ 
".fullschema" commands of the command-line shell, to turn on \ 
pretty-printing.
Added the ".eqp full" option to the command-line shell, that does both \ 
EXPLAIN and EXPLAIN QUERY PLAN on each statement that is evaluated.
Improved unicode filename handling in the command-line shell on Windows.
Improved resistance against goofy query planner decisions caused by incomplete \ 
or incorrect modifications to the sqlite_stat1 table by the application.
Added the sqlite3_db_config(db,SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION) interface \ 
which allows the sqlite3_load_extension() C-API to be enabled while keeping the \ 
load_extension() SQL function disabled for security.
Change the temporary directory search algorithm on Unix to allow directories \ 
with write and execute permission, but without read permission, to serve as \ 
temporary directories. Apply this same standard to the "." fallback \ 
directory.

Bug Fixes:
----------
Fix a problem with the multi-row one-pass DELETE optimization that was causing \ 
it to compute incorrect answers with a self-referential subquery in the WHERE \ 
clause. Fix for ticket dc6ebeda9396087
Fix a possible segfault with DELETE when table is a rowid table with an INTEGER \ 
PRIMARY KEY and the WHERE clause contains a OR and the table has one or more \ 
indexes that are able to trigger the OR optimization, but none of the indexes \ 
reference any table columns other than the INTEGER PRIMARY KEY. Ticket \ 
16c9801ceba49.
When checking for the WHERE-clause push-down optimization, verify that all terms \ 
of the compound inner SELECT are non-aggregate, not just the last term. Fix for \ 
ticket f7f8c97e97597.
Fix a locking race condition in Windows that can occur when two or more \ 
processes attempt to recover the same hot journal at the same time.