output mithril, stream and ospec esm versions on build - fixes #2112 (#2194)

* output mithril, stream and ospec esm versions on build

* Add esm bundles

* [request] Clearer error message for JSON deserialization failure (#2195)

* Bundled output for commit fd7cf8041e [skip ci]

* Fix #1714 conditionally halting stream (#2200)

* Fix #1714 conditionally halting stream

* Add note in changelog

* Do not include stream as named export in mithril.esm.js

* Rename mithril.min.esm.js to mithril.esm.min.js

* Add esm files to eslintignore

* Add named exports

* Add hyperscript `m` as named export

* Add builds with export changes

* checkout regular bundled files

* Change .esm.js to .mjs

* Update pkg module to point to .mjs

* Fix for export names to avoid collision

* Updated bundled files

ospec/esm.js

@@ -0,0 +1,19 @@
+"use strict"
+
+/*
+
+This script will create an esm compatible script
+from the already compiled version of:
+
+- ospec.js > ospec.mjs
+
+*/
+
+var fs = require("fs")
+
+var ospec = fs.readFileSync("ospec.js", "utf8")
+fs.writeFileSync("ospec.mjs",
+	"export default "
+	+ ospec.slice(ospec.indexOf("})") + 2)
+	+ "()"
+)