Enhance reading from .python-version (#787)

* Enhance reading from .python-version

* Fix typos

* Fix lint

* Add built files

* Don't use EOL versions in `utils.test.ts`

* Fix Prettier

* Don't use unreleased versions in `utils.test.ts`

* Update versions in `utils.test.ts` again

src/setup-python.ts

@@ -11,7 +11,7 @@ import {
   logWarning,
   IS_MAC,
   getVersionInputFromFile,
-  getVersionInputFromPlainFile
+  getVersionsInputFromPlainFile
 } from './utils';
 
 function isPyPyVersion(versionSpec: string) {
@@ -35,7 +35,7 @@ async function cacheDependencies(cache: string, pythonVersion: string) {
 
 function resolveVersionInputFromDefaultFile(): string[] {
   const couples: [string, (versionFile: string) => string[]][] = [
-    ['.python-version', getVersionInputFromPlainFile]
+    ['.python-version', getVersionsInputFromPlainFile]
   ];
   for (const [versionFile, _fn] of couples) {
     logWarning(