use new CaskInvalidError, improve messages
CaskError objects instead of strings, better msgs
make checksum-missing message match Cask semantics

for copy/paste
caveats DSL os_version_only spelling

change method name to follow documentation
Merge pull request #3042 from rolandwalker/curl_feedback_message

improve debug message from curl
Updated Litecoin-Qt.app to 0.8.6.2.
Merge pull request #3057 from rolandwalker/caveat_method_spelling

bugfix: caveats DSL `os_version_only` spelling
Upgrade pycharm-community app to 3.1.1
TagoMan 0.6.1 BETA
ActoTracker 0.9 BETA
Tactor 0.4.6 BETA
Update node to v0.10.26
Merge pull request #3064 from uipoet/node

Update node to v0.10.26
Merge pull request #3060 from SergeStinckwich/pycharm-community

Upgrade pycharm-community app to 3.1.1
Merge pull request #3059 from morganestes/litecoin-update

Updated Litecoin-Qt.app to 0.8.6.2.
Upgrade Synergy.app to 1.4.16

- Change download url to new website
- Remove the hint which has been fixed already in this version
Merge pull request #3065 from leemars/upgrade-synergy

Upgrade Synergy.app to 1.4.16
Merge pull request #3063 from leoj3n/tactor-0.4.6-beta

Tactor 0.4.6 BETA
Merge pull request #3062 from leoj3n/actotracker-0.9-BETA

ActoTracker 0.9 BETA
Merge pull request #3061 from leoj3n/tagoman-0.6.1-beta

TagoMan 0.6.1 BETA