Sqlean.py

This release brings the [regexp](https://github.com/nalgeon/sqlean/blob/main/docs/regexp.md) extension for Linux and macOS. It supports all major regular expression features. The old `re` extension is still available for Windows users.

The [vsv](https://github.com/nalgeon/sqlean/blob/main/docs/vsv.md) extension now supports custom decimal separators (`dsep` parameter).

Security fixes in [crypto](https://github.com/nalgeon/sqlean/blob/main/docs/crypto.md) and [fuzzy](https://github.com/nalgeon/sqlean/blob/main/docs/fuzzy.md) extensions.

Added the `eval` function to the [define](https://github.com/nalgeon/sqlean/blob/main/docs/define.md) extension:

eval(sql[, separator])

Executes arbitrary SQL and returns the result as string (if any):

sql
select eval('select 42');
42
select eval('select 10 + 32');
42
select eval('select abs(-42)');
42
select eval('select ''hello''');
hello

Changes in the [define](https://github.com/nalgeon/sqlean/blob/main/docs/define.md) extension:

- Radically improved scalar functions performance by caching prepared statements.
- BREAKING: Always call `define_free()` before disconnecting to free resources.

This release brings the [define](https://github.com/nalgeon/sqlean/blob/main/docs/define.md) extension. It allows creating user-defined functions in regular SQL.

Binaries for Apple silicon (ARM-based) macOS: `sqlean-macos-arm64.zip`