chore: simplify test-all-versions configuration

As recast is no longer a peer dependency we don't need to explicitly
test for its compatibility.
Now we are just testing all supported versions of react-docgen.

Author: ZauberNerd

.tav.yml

@@ -1,11 +1,17 @@
-recast-0-12:
+node-4-5:
   name: react-docgen
-  versions: '>= 2.17.0 < 3.0.0 || >= 3.0.0-beta7 <= 3.0.0-beta10'
-  peerDependencies: recast@0.12.6
+  node: '>= 4.0.0 < 6.0.0'
+  versions: '>= 2.17.0 < 3.0.0'
   commands: npm run test:unit
 
-recast-0-13:
+node-6-7:
   name: react-docgen
-  versions: '>= 3.0.0-beta10 <= 3.0.0-beta12'
-  peerDependencies: recast@0.13.0
+  node: '>= 6.0.0 < 8.0.0'
+  versions: '>= 3.0.0 < 5.0.0 || >= 3.0.0-beta1 <= 3.0.0-beta12 || >= 3.0.0-rc.0 <= 3.0.0-rc.2'
+  commands: npm run test:unit
+
+node-8-x:
+  name: react-docgen
+  node: '>= 8.0.0'
+  versions: '>= 3.0.0 <= 6.0.0 || >= 5.0.0-beta.1'
   commands: npm run test:unit