6.5

Made datethen tolerate negative arguments.

6.4

Fixed bugs in date2time. Consult manual.

6.3

Promoted the paraments of slice, find, input, and output to long ints to
reflect promotion of fixnums to 64 bits.

6.2

Modified the stat intrinsic to return the time values as fixnums instead of
strings.

Remove timediff intrinsic. It is no longer necessary now that time values
are fixnums.

6.1

Changed timethen, time, datethen, timediff, localtime, and utctime intrinsics
to accept and return fixnums.

6.0

Changed the size of fixnums to long ints. Removed the "unsigned"
intrinsic as a consequence.

5.37

Corrected bug in garbage collector.

5.36

Lowered initial size of hash tables to 256 elements.

Removed the library functions "filter_server" and "remove_http_stuff".
With https being the standard now, these functions are extraneous. Curl
can be used to accomplish what they did.

Updated manual page.

5.35

Replaced call to sqlite3_prepare with sqlite3_prepare_v2 because
the former has been deprecated.

5.34

Added tests to reject atoms with print syntax longer than INT_MAX.

Removed Minimunger.

5.33

Changes to intern intrinsic.
Changes to example code.

5.32

Syntax table fixes for better performance.

5.31

Corrected bugs in syntax table hash handling.

5.30

Removed the used intrinsic because it is redundant with the length
intrinsic.

5.29

Put the invocation of garbage collector back into check_args() for
better performance.

5.28

Cleaned-up the parser code.
Removed invocation of garbage collector from evaluate_body() and
check_args().

5.27

Removed the gc and gc_freq intrinsics.

5.26

Corrected bug that incorrectly reported number of items in tables.

5.25

Tuned internal settings for speed.

5.24

Changed hash function for tables.

5.23

Added file2string intrinsic. 
Made join more efficient.
