update CoC to 0.4

see https://github.com/Bantik/contributor_covenant
Create GDAL Framework 1.11 Cask
Required as dependency to install QGIS
See #5074
The complete framework package is installed because most applications that use GDAL will also need Proj, UnixImage and Numpy.
Opera 22.0.1471.70
Merge pull request #5121 from ahbeng/opera-22.0.1471.70

Opera 22.0.1471.70
Opera Next 23.0.1522.24
Merge pull request #5122 from ahbeng/opera-next-23.0.1522.24

Opera Next 23.0.1522.24
update sketchup to v2014 and add sketchupviewer

sketchup has 3 products, make, pro and viewer
see http://www.sketchup.com/download/all
update to latest 2014 version
add sketchupviewer
pro will be added to versions repo
Add Coq IDE, version 8.4pl4
Merge pull request #5090 from jconley/sketchup

update sketchup to v2014 and add sketchupviewer
Merge pull request #5124 from vitorgalvao/fix-5123

Add Coq IDE, version 8.4pl4
add scratch cask
upgrade darktable to v1.4.2
add luminance-hdr 2.4.0
Merge pull request #5126 from jconley/scratch

add scratch cask
Merge pull request #5128 from vitorgalvao/fix-5127

upgrade darktable to v1.4.2
Update Zotero to 4.0.21.5

Value of `version` stanza now reused in `url`, ref. #4910.
Merge pull request #5129 from ndr-qef/zotero

Update Zotero to 4.0.21.5
install rspec; move first few tests over

refs #5080
Merge pull request #5120 from caskroom/install-rspec

install rspec; move first few tests over
Add Cask Xamarin, replacing older Xamarin Casks

These packages are: xamarin-android, xamarin-ios, and xamarin-studio.
They have been added to homebrew-versions.

Only call caveats once on Xamarin cask