readme: add babashka compatible badge

Let folks know Regal is bb compatible with the bb compatible badge! 🎉

Modernize tooling setup

Update "Use with Malli" README section

Add gc-profiling plugin.

Add Java 16.

change default CI default heap size

## Added
- Support for [Google RE2](https://github.com/google/re2j)

- Lazy qualifiers: `:*?`, `...

Alys/fix normalize

Add lazy quantifiers

Add re2 support

The default behavior of a regex quantifier is "greedy": consume as many
characters as possible t...

## Added

- `lambdaisland.regal.generator/sample` and
`lambdaisland.regal.generator/generate` ...

Update changelog, add comment explaining generator craziness

Also changed `:new-line` in re2 to work modulo backtracking

First one found by property testing, second by clj-kondo :)

Specify the GC to avoid intermittent memory errors on CI, mostly with Java 9.

I'm wondering if the G1GC garbage collector avoids too much garbage accumulation, which is why t...

Fix paths

Fix an issue with how the :any generator generates values

It should not generate newlines or carriage returns, instead it was not
generating the character...

Update config.yml to use new orbs

Clojure 1.9 doesn't seem compatible with Malli, unfortunately.

## Added

- Add `lambdaisland.regal.generator/generate` as a shorthand for generating a
single...

## Added

- Added support for `[:repeat form num]` (so fixed number of repeats, instead of min/m...

## Fixed

- Java flavor: parse `\s` and `\S` to to semantically equivalent forms, instead
of i...

Use protocol to define default error message

use m/-check-children!

Parse unrecoginzed escape code to the character they escape, instead of
returning a parse error....

## Added

## Fixed

## Changed

## Added

- `[:char ...]` for code point literal
- `[:ctrl ...]` for control character literals
...