prep for v6.0.0-beta.21 release

Author: nycdotnet

CHANGELOG.md

@@ -2,6 +2,9 @@
 
 ## vNext
 
+## v6.0.0-beta.21
+* FIX: Resolves baseUrl appearing blank under certain circumstances.  Thanks for the PR to first-time contributor [@beyerleinf](https://github.com/beyerleinf).  (#426)
+
 ## v6.0.0-beta.20
 * FEATURE: Adds support for a RegEx to exclude files from the fast cache.  Thanks for the PR to first-time contributor [@shuky19](https://github.com/shuky19).  (#422)
 

README.md

@@ -13,8 +13,8 @@ Do you use grunt-ts?  Would you like to help keep it up-to-date for new TypeScri
 Thank you for your interest in contributing!  Please see the [contributing](CONTRIBUTING.md) guide for details.
 
 ### Latest Changes
-Latest beta release is `6.0.0-beta.20` which is compatible with TypeScript 2.7, and any future version of TypeScript by using the [tsconfig.json passthrough](#passthrough) feature, or the [additionalFlags](#additionalflags) option.
-Latest stable release is `5.5.1` with built-in support for features added in TypeScript 1.8.  [Full changelog is here](CHANGELOG.md).
+Latest recommended release is `6.0.0-beta.21`, which is compatible with TypeScript 2.7, and any future version of TypeScript by using the [tsconfig.json passthrough](#passthrough) feature, or the [additionalFlags](#additionalflags) option.
+Latest "stable" (though very old at this point) release is `5.5.1` with built-in support for features up to TypeScript 1.8.  [Full changelog is here](CHANGELOG.md).
 
 ## Quickstart
 

package.json

@@ -2,7 +2,7 @@
   "author": "basarat",
   "name": "grunt-ts",
   "description": "Compile and manage your TypeScript project",
-  "version": "6.0.0-beta.20",
+  "version": "6.0.0-beta.21",
   "homepage": "https://github.com/TypeStrong/grunt-ts",
   "repository": {
     "type": "git",