Refactor yarn helper and increase coverage

* Fix: don’t check for closed PR if groupName is configured

* Fix GitHub branchExists check

* Revert "Fix GitHub branchExists check"

This reverts commit 775b3172f1355d803b01454a007935005e1a86a2.

* Revert "Revert "Fix GitHub branchExists check""

This reverts commit 84e4a5dbbf37cbbf3b417a9c96e372038b651731.

* Update tests

* Fix: don’t check for closed PR if groupName is configured

* Fix GitHub branchExists check

* Revert "Fix GitHub branchExists check"

This reverts commit 775b3172f1355d803b01454a007935005e1a86a2.

* Add prCreation config option

* Support ‘status-success’ configuration

* Add option ‘not-pending’

Closes #166 

* Support multiple yarn.lock files for maintenance

Closes #166

* Refactor maintainYarnLock logic

Closes #10, Closes #48

* Update configuration options

* Upgrade dependencies to latest if groupName is configured

* Update docs

* Add groupName logic

Closes #134 

* Refactor to combine upgrades in the same branch

* Fixing tests

* Fix config

* Fix more tests

* Fix newContent

* drop verbose

* Fix package file logic

Closes #133 

* Add packages object

* Add first test

* Add override

* More package tests

* Update example config in docs

* Add regex test

Related: #133 

* Add getDepTypeConfig

* Add depTypeConfig

* Add depType config tests

* Fix depTypes list

* Assign configs to individual deps

* Fix

* Trim config object

Closes #118

Closes #96 

* Improve yarn logs

* Add processYarnLock

* Update worker.js

* Update worker.js

* Fix and update docs

* Make Yarn Maintenance strings into templates

Closes #31 

* Add config.pinVersions

* Check config.pinVersions before pinning

* Fix no pinning

* Add tests for existing functionality

* Add test for new feature

* Add semver-utils

* Supports tilde ranges

* Add tests for tilde and caret

* Add support for lesser than ranges

* Document range upgrade logic

* Support shorthand and .x ranges

* Refactor upgrade logic

* Simplify refactor

* revert test change

* Add isRange and update PR title template

* Refactor major/minor

* Refactor isRange

* Refactor newRange

* Use lodash for rejecting pin

* Revert "Use lodash for rejecting pin"

This reverts commit 7f0b704bbf99b6289df3789e969abeb4dc293523.

* Fix major check

* Use lodash for rejecting

* Use lodash map

* rename

* Refactor mapping

* Refactor test config

* Rename workingVersion to changeLogFromVersion

* Add changeLogToVersion