Update CHANGELOG.md

CHANGELOG.md

@@ -3,6 +3,24 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/) and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## [1.3.0] - 2018-04-11
+### Changed
+- Updates Meteor to version 1.6
+- Replaces outdated Meteor packages from the Atmosphere package management system with `npm` packages
+- [Rips out](https://github.com/globeandmail/chart-tool/issues/118) Meteor's Blaze templating system in favour of React, which will make the interface more extensible going forward
+- Charts now redraw only when presentational elements (i.e. data, headings, chart type) change, making for a faster interface
+- For PDF generation, `wkhtmltopdf` has been replaced with `puppeteer`, a headless browser from the Chrome team
+- PNG generation is now handled asynchronously server-side via `puppeteer`. This means PNGs will be a bit slower to generate, but should lead to more consistent PNGs regardless of your browser or environment.
+- Thumbnails are also generated server-side, and done asynchronously, meaning that a large base64 string for a processed thumbnail won't lock up the interface while it gets sent to the database
+- Some [fixes](https://github.com/globeandmail/chart-tool/issues/167) for certain tooltip edge cases
+- Rearchitects the PNG export overlay to include more options and a preview
+
+### Added
+- `document.title` for pages now [includes the chart slug](https://github.com/globeandmail/chart-tool/issues/163) when applicable
+- Adds [sorting options](https://github.com/globeandmail/chart-tool/issues/107) to the archive page
+- When creating a new chart, we now do some [checking of the data](https://github.com/globeandmail/chart-tool/issues/59) for prefixes (such as "$") and suffixes ("%"), and set prefixes and suffixes for the chart accordingly, which should save a few seconds on certain chart types
+- Adds [basic highlighting](https://github.com/globeandmail/chart-tool/issues/77) annotations for bar and column charts
+
 ## [1.2.0] - 2016-12-08
 ### Changed
 - Rewrites main library to [use ES6](https://github.com/globeandmail/chart-tool/issues/89)