This update fixes a few bugs:
- Improper response to double SIGINT with editline.
- Not letting libedit handle terminal size changes.
- A dc crash from improperly handling an error.
- A duplicate check for reference arrays.
- Build failures with GCC 15.

This update fixes a bug that line breaks in printed numbers may not
match the line length set by the user. The value is printed correctly,
just not split as specified in some situations.

This update improves the implementation of the power function p() and
adds 3 new functions to the extended math library: min(), max(), and
i2rand().

This release that fixes an infinite loop bug in the (non-standard)
extended math library functions root() and cbrt(), fixes a bug with
BC_LINE_LENGTH=0, and adds the fib() function to the extended math
library to calculate Fibonacci numbers.

This is a production release that fixes a bug.

The bug was that if an array element was used as a parameter, and then
a later parameter had the same name as the array whose element was
used, bc would grab the element from the new array parameter, not the
actual element from before the function call.

This is a production release that fixes a discrepancy from the bc
standard, a couple of memory bugs, and adds new features.

The discrepancy from the bc standard was with regards to the behavior
of the quit command. This bc used to quit whenever it encountered quit
during parsing, even if it was parsing a full file. Now, bc only quits
when encountering quit after it has executed all executable statements
up to that point.

This behavior is slightly different from GNU bc, but users will only
notice the difference if they put quit on the same line as other
statements.

The first memory bug could be reproduced by assigning a string to a
non-local variable in a function, then redefining the function with
use of the same non-local variable, which would still refer to a
string in the previous version of the function.

The second memory bug was caused by passing an array argument to the
asciify() built-in function. In certain cases, that was wrongly
allowed, and the interpreter just assumed everything was correct and
accessed memory. Now that arrays are allowed as arguments (see below),
this is not an issue.

The first feature was the addition of the is_number() built-in
function (u in dc) that returns 1 if the runtime argument is a number
and 0 otherwise.

The second feature was the addition of the is_string() built-in
function (t in dc) that returns 1 if the runtime argument is a string
and 0 otherwise.

These features were added because I realized that type-checking is
necessary now that strings can be assigned to variables in bc and
because they've always been assignable to variables in dc.

The last added feature is the ability of the asciify() built-in
function in bc to convert a full array of numbers into a string. This
means that character-by-character printing will not be necessary, and
more strings than just single-character ones will be able to be
created.

This update fixes a parser issue, which in special situations could
reject syntactically correct if statements.

This version adds options and functions that allow to print numbers
in the open interval (-1 .. 1) with or without a leading 0 digit.

Additionally, an option has been added to prevent line wrap and
allows to print arbitrarily long results on a single line.

This is a new major release with a number of changes and extensions:

- Limited the number of temporary numbers and made the space for them
  static so that allocating more space for them cannot fail.
- Allowed integers with non-zero scale to be used with power, places,
  and shift operators.
- Added greatest common divisor and least common multiple to lib2.bc.
- Made bc and dc UTF-8 capable.
- Added the ability for users to have bc and dc quit on SIGINT.
- Added the ability for users to disable prompt and TTY mode by
  environment variables.
- Added the ability for users to redefine keywords.
- Added dc's modular exponentiation and divmod to bc.
- Added the ability to assign strings to variables and array elements
  and pass them to functions in bc.
- Added dc's asciify command and stream printing to bc.
- Added bitwise and, or, xor, left shift, right shift, reverse,
  left rotate, right rotate, and mod functions to lib2.bc.
- Added the functions s2u(x) and s2un(x,n), to lib2.bc.