v3.12.0 (#4282)

* Use `parameterWithMeta` to get parameter data in <ParameterRow>

* Prefer specPath when fetching resolved subtrees in OperationContainer

* Add test for OAS3 callback rendering

* Remove debugger statement

* Pass base resolution URL directly to Swagger-Client subtree resolver

* Remove accidental comment

* Migrate additional options

* Don't default to empty Map when getting subtree

* fix(validateParam): check for ImList type before using count method

* Use `replaceState` to update `urls.primaryName`

This gives us the stateful URL we want, without:
(a) refreshing the page on update
(b) creating a long, useless history for the user
(c) implying that browser history is two-way bound
    to Swagger-UI (it isn't, we don't have a router)

* Add `fn.opsFilter` docs and internal API versioning note

* restrict `x-example` functionality to Swagger 2.0

* polish Authorize + Close buttons

* add tachyons; use it for padding the new Reset button

* v3.12.0

* rebuild dist

package.json

@@ -1,6 +1,6 @@
 {
   "name": "swagger-ui",
-  "version": "3.11.0",
+  "version": "3.12.0",
   "main": "dist/swagger-ui.js",
   "repository": "git@github.com:swagger-api/swagger-ui.git",
   "contributors": [
@@ -83,7 +83,7 @@
     "scroll-to-element": "^2.0.0",
     "serialize-error": "2.0.0",
     "shallowequal": "0.2.2",
-    "swagger-client": "^3.5.0",
+    "swagger-client": "^3.5.1",
     "url-parse": "^1.1.8",
     "whatwg-fetch": "0.11.1",
     "worker-loader": "^0.7.1",
@@ -144,6 +144,7 @@
     "standard": "^10.0.2",
     "standard-loader": "^6.0.1",
     "style-loader": "0.18.2",
+    "tachyons-sass": "^4.9.2",
     "url-loader": "0.5.9",
     "webpack": "^2.6.1",
     "webpack-bundle-size-analyzer": "^2.5.0"