Warn for deprecated specs on outdated
Refactored Command::Outdated to make it stub-able
Update Changelog
Helpful exception when reading version information with merge conflict

related to https://github.com/CocoaPods/CocoaPods/issues/1853, https://github.com/CocoaPods/CocoaPods/issues/2065, https://github.com/CocoaPods/CocoaPods/issues/2056 etc.
Conditionally include `sudo` in suggested update command

Closes https://github.com/CocoaPods/CocoaPods/issues/2058
Improved error message when pulling a spec repo raises

Closes https://github.com/CocoaPods/CocoaPods/issues/1914
Move repo update to install section of travis.yml
Try to detect and remove local paths from error messages when generating a ‘search for existing tickets’ URL.

Closes https://github.com/CocoaPods/CocoaPods/issues/2057
Merge pull request #2078 from carsonmcdonald/travisrepoupfix

Move repo update to install section of travis.yml
[Gemspec] Add dependency on cocoapods-plugins
Closes https://github.com/CocoaPods/CocoaPods/issues/2092
Merge pull request #2076 from segiddins/show-repo-name-on-failed-pull

Improved error message when pulling a spec repo raises
Merge pull request #2067 from segiddins/helpful-exception-on-repo-version-merge-conflict

Helpful exception when reading version information with merge conflict
[ErrorReporter] Extract pathless_exception_message
[Hound] Remove trailing whitespace
Print current version when the repo/lockfile requires a higher version

Closes https://github.com/CocoaPods/CocoaPods/issues/2049
Warn for deprecated specs on install
Merge branch 'check-if-sudo-needed-for-gem-install' of https://github.com/segiddins/CocoaPods into segiddins-check-if-sudo-needed-for-gem-install

* 'check-if-sudo-needed-for-gem-install' of https://github.com/segiddins/CocoaPods:
  Conditionally include `sudo` in suggested update command

Conflicts:
	spec/unit/sources_manager_spec.rb
Merge branch 'segiddins-check-if-sudo-needed-for-gem-install'

* segiddins-check-if-sudo-needed-for-gem-install:
  Conditionally include `sudo` in suggested update command
Merge branch 'warn-for-deprecated-specs-on-outdated' of https://github.com/segiddins/CocoaPods into segiddins-warn-for-deprecated-specs-on-outdated

* 'warn-for-deprecated-specs-on-outdated' of https://github.com/segiddins/CocoaPods:
  Update Changelog
  Refactored Command::Outdated to make it stub-able
  Warn for deprecated specs on outdated

Conflicts:
	CHANGELOG.md
Merge branch 'segiddins-warn-for-deprecated-specs-on-outdated'

* segiddins-warn-for-deprecated-specs-on-outdated:
  Update Changelog
  Refactored Command::Outdated to make it stub-able
  Warn for deprecated specs on outdated