Merge pull request #115 from timholy/teh/gtkr

Rewrite ImageView based on GtkReactive

.travis.yml

@@ -1,8 +1,17 @@
 language: julia
+sudo: true
+dist: trusty
 os:
     - linux
+addons:
+    apt:
+        packages:
+            - xvfb
+            - xauth
+            - libgtk-3-0
 julia:
     - 0.5
+    - 0.6
     - nightly
 notifications:
   email: false

NEWS.md

@@ -0,0 +1,34 @@
+# New in 0.5
+
+ImageView has been rewritten from scratch. Effort was made to maintain
+backward compatibility where possible.
+
+## Breaking changes
+
+- The return value of `imshow` has changed; it is now a `Dict` that
+  stores Gtk widgets, Reactive signals, etc.
+
+## Major features
+
+- This package now uses Gtk. Rendering is considerably faster in some
+  cases, and the package is faster to load due to precompilation.
+
+- Navigation and zoom region are controlled by GtkReactive/Reactive
+  signals, allowing one to more easily extract this information for
+  reuse elsewhere.  Examples are shown in the README.
+
+- A new contrast GUI is independent of any plotting package, leading
+  to faster loading and faster time-to-first-plot.
+
+- One can now display objects that are not subtypes of
+  `AbstractArray`. See `test/cone.jl` for a demonstration.
+
+## Deprecations
+
+- `canvasgrid` now returns more arguments; a deprecation warning
+  encourages transitioning to the new syntax
+
+- `pixelspacing` is deprecated as a keyword (use an `AxisArray` instead)
+
+- The `xy` keyword has become `axes`, and it takes dimension integers
+  or Symbols (if the image is an AxisArray)