Remove upper bounds on pubspec (#163)

* remove upper constraint for flutter environment
* update docs
Co-authored-by: Luke Pighetti <lukepighetti@gmail.com>

CHANGELOG.md

@@ -1,3 +1,6 @@
+# 1.6.3
+- Remove upper bounds on Flutter SDK checks because Flutter releases are a ridiculous mess
+
 # 1.6.2
 - Support for Flutter `>=1.12 <=1.17`
 

README.md

@@ -3,7 +3,7 @@
 
 The brightest, hippest, coolest router for Flutter.
 
-[![Version](https://img.shields.io/badge/version-1.6.2-blue.svg)](https://pub.dartlang.org/packages/fluro)
+[![Version](https://img.shields.io/badge/version-1.6.3-blue.svg)](https://pub.dartlang.org/packages/fluro)
 [![Build Status](https://travis-ci.org/theyakka/fluro.svg?branch=master)](https://travis-ci.org/theyakka/fluro)
 [![Coverage](https://codecov.io/gh/theyakka/fluro/branch/master/graph/badge.svg)](https://codecov.io/gh/theyakka/fluro)
 
@@ -27,7 +27,7 @@ See CHANGELOG for all breaking (and non-breaking) changes.
 You should ensure that you add the router as a dependency in your flutter project.
 ```yaml
 dependencies:
- fluro: "^1.6.2"
+ fluro: "^1.6.3"
 ```
 
 You can also reference the git repo directly if you want:

pubspec.yaml

@@ -2,12 +2,12 @@ name: fluro
 description: >
   Fluro is a Flutter routing library that adds flexible routing options like wildcards, named
   parameters and clear route definitions.
-version: 1.6.2
+version: 1.6.3
 homepage: https://github.com/theyakka/fluro
 
 environment:
   sdk: ">=2.6.0 <3.0.0"
-  flutter: ">=1.12.0 <1.17.0"
+  flutter: ">=1.12.0"
 
 dependencies:
   flutter: