conda: use conda-forge and depend on pyqtgraph 0.10.0 (#704)

RELEASE_NOTES.rst

@@ -3,6 +3,12 @@
 Release notes
 =============
 
+2.3
+---
+
+* When using conda, add the conda-forge channel before installing ARTIQ.
+
+
 2.2
 ---
 

conda/artiq/meta.yaml

@@ -30,7 +30,7 @@ requirements:
     - dateutil
     - pyqt >=5.5
     - quamash
-    - pyqtgraph
+    - pyqtgraph 0.10.0
     - pygit2
     - aiohttp
     - levenshtein

doc/manual/installing.rst

@@ -31,7 +31,11 @@ Executing just ``conda`` should print the help of the ``conda`` command [1]_.
 Installing the ARTIQ packages
 -----------------------------
 
-Add the M-Labs ``main`` Anaconda package repository containing stable releases and release candidates to your conda configuration::
+First add the conda-forge repository containing ARTIQ dependencies to your conda configuration::
+
+    $ conda config --add channels http://conda.anaconda.org/conda-forge/label/main
+
+Then add the M-Labs ``main`` Anaconda package repository containing stable releases and release candidates::
 
     $ conda config --add channels http://conda.anaconda.org/m-labs/label/main