This PR adds the capability to renovate more than one base branch at a time. For instance, a project may have their released `3.x` version on `master`, while an upcoming `4.x` is being prepared using branch `next`. `4.x` might have a quite different set of dependencies (e.g. some removed or some added) so it's not appropriate to only target `master` and keep rebasing, as it will get messy. Instead, it's necessary to target both `master` and `next` to keep both updated.
Closes#1279
Adds new configuration option “pathRules”. pathRules is an array of path rules. Each rule should contain a “paths” array which uses string or glob matching like the existing ignorePaths. If any of the paths in a rule matches a packageFile then the remaining configuration from the rule is applied to the packageFile.
This PR adds new checks that:
- Website configuration options are listed in alphabetical order
- Every relevant configuration option in source code is documented on the website
Website docs have been updated accordingly to pass.
Closes#543, Closes#1310
