Add structs, cleanup typings (ianstormtaylor#383)

* add unknown struct

* add mask helper

* add integer struct

* add negative/positive refinements

* add pick struct helper

* add omit struct helper

* fix optional values in object structs, simplify partial structs

* add assign utility

* add enums schema value

* add validation methods to struct classes

* cleanup

* cleanup typings, dir structure, naming

* update structs reference

* add missing tests

* update readme

* add opaque set/map structs

* rename shape, make error types analyzable, add refinement info to errors

* add regexp struct

* update docs, add path to error message

* update test

* add gitbook docs

* add gitbook

* add guides, update gitbook

* fix gitbook?

* update docs

* update docs

* fix gitbook?

* fix gitbook?

* update errors docs

* fix tests

* refactor refinements

* rename shape to type, clean up docs

* fix errors, coercion

* cleanup coercion/refinement naming

* cleanup refinements

* fix gitbook

* update docs

* update docs

* change masking logic, add options objects

* update docs

* update docs

Author: ianstormtaylor

.gitbook.yaml

@@ -0,0 +1,4 @@
+root: ./docs
+structure:
+  readme: ./readme.md
+  summary: ./summary.md

Readme.md

@@ -4,7 +4,7 @@
 
 <p align="center">
   A simple and composable way  <br/>
-  to validate data in JavaScript.
+  to validate data in JavaScript (and TypeScript).
 </p>
 <br/>
 <br/>
@@ -19,17 +19,11 @@
 </p>
 
 <p align="center">
-  <a href="https://travis-ci.org/ianstormtaylor/superstruct">
-    <img src="https://travis-ci.org/ianstormtaylor/superstruct.svg?branch=master">
-  </a>
   <a href="https://unpkg.com/superstruct/umd/superstruct.min.js">
-    <img src="http://img.badgesize.io/https://unpkg.com/superstruct/umd/superstruct.min.js?compression=gzip&amp;label=size&amp;maxAge=300">
+    <img src="https://badgen.net/bundlephobia/minzip/superstruct?color=green&label=size">
   </a>
   <a href="./package.json">
-    <img src="https://img.shields.io/npm/v/superstruct.svg?maxAge=300&label=version&colorB=007ec6&maxAge=300">
-  </a>
-  <a href="./License.md">
-    <img src="https://img.shields.io/npm/l/slate.svg?maxAge=300">
+    <img src="https://badgen.net/npm/v/superstruct?color=blue&label=version">
   </a>
 </p>