remove nil #332 and replace null => #null and undefined => `#…

…void` #330

CHANGELOG.md

@@ -6,6 +6,8 @@
 * `eval` use `interaction-environment` stead of `current-environment` by default
 * remove support for string argument to `read` [#327](https://github.com/jcubic/lips/issues/327)
 * make `null` falsy value [#330](https://github.com/jcubic/lips/issues/330)
+* remove `nil` parser constant [#332](https://github.com/jcubic/lips/issues/332)
+* replace `undefined` with `#void`, and `null` with `#null`
 ### Features
 * add `vector-for-each` and `vector-copy!` function from R7RS
 * add `string-for-each`, `string-downcase`, and `string-upcase` from R7RS

README.md

@@ -7,7 +7,7 @@
 [![npm](https://img.shields.io/badge/npm-1.0.0%E2%80%93beta.18.1-blue.svg)](https://www.npmjs.com/package/@jcubic/lips)
 ![1.0.0 Complete](https://img.shields.io/github/milestones/progress-percent/jcubic/lips/1?label=1.0.0%20Complete)
 [![Build and test](https://github.com/jcubic/lips/actions/workflows/build.yaml/badge.svg?branch=devel&event=push)](https://github.com/jcubic/lips/actions/workflows/build.yaml)
-[![Coverage Status](https://coveralls.io/repos/github/jcubic/lips/badge.svg?branch=devel&6415306a044138f0429cca6f3210946e)](https://coveralls.io/github/jcubic/lips?branch=devel)
+[![Coverage Status](https://coveralls.io/repos/github/jcubic/lips/badge.svg?branch=devel&2d726da5d9fc6d26e6724add645f1917)](https://coveralls.io/github/jcubic/lips?branch=devel)
 [![Join Gitter Chat](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/jcubic/lips)
 ![NPM Download Count](https://img.shields.io/npm/dm/@jcubic/lips)
 ![JSDelivr Download count](https://img.shields.io/jsdelivr/npm/hm/@jcubic/lips)