adds a changelog doc

CHANGELOG.md

@@ -0,0 +1 @@
+Changelog maintained at [documentation/docs/05-changelog.md](documentation/docs/05-changelog.md)

documentation/docs/05-changelog.md

@@ -0,0 +1,25 @@
+CHANGELOG
+
+#### v0.4.0
+  - Updates mapbox-sdk-unity-core to v1.0.0-alpha13; features vector tile overzooming
+  - Updates to attribution guidelines in README.MD
+  - Added Conversions.cs and VectorExtensions.cs to enable simple conversions from geocoordinate to unity coordinate space
+
+#### v0.3.0
+  - Added new infrastructure for mesh generation
+  - Added new demos for basic, styled, point of interest vector mesh generation
+  - Added new demo for vector tiles + terrain with a slippy implementation (dynamic tile loading)
+  - Added a new demo for Mapbox Directions & Traffic
+  - Deprecated old slippy demo
+  - Deprecated old directions component demo
+
+#### v0.2.0
+  - Added core sdk support for mapbox styles
+  - vector tile decoding optimizations for speed and lazy decoding
+  - Added attribution prefab
+  - new Directions example
+  - All examples scripts updated streamlined to use MapboxConvenience object
+
+#### v0.1.1
+  - removed orphaned references from link.xml, this was causing build errors
+  - moved JSON utility to Mapbox namespace to avoid conflicts with pre-exisiting frameworks

documentation/docs/toc.yml

@@ -13,5 +13,8 @@
 - name: Attribution
   href: 04-attribution.md  
 
+- name: Changelog
+  href: 05-changelog.md 
+
 - name: HoloLens Development
   href: hololens-development.md