v1.47.0

@nyc4m

#868 - @nyc4m - Run gofmt (closes #866)
#865 - @anitgandhi - load balancers: add new size slug field
#863 - @thelovekesh - Update README.md
#862 - @nywilken - commands/doit: Prevent creation of config home when using --config
#854 - @timoreimann - Kubernetes: add support for node pool taints
#861 - @kamaln7 - upgrade godo to v1.45.0
#858 - @andrewsomething - Remove unused script: script/build.sh
#852 - @kamaln7 - apps: add spec commands: get and validate
#851 - @bouk - apps: add defaults for deployment id and component name
#850 - @kamaln7 - Update godo, present confirmation prompt on app deletion
#836 - @andrewsomething - CONTRIBUTING.md: Add headers for different test types.
#844 - @rbutler - invoices: add category to InvoiceItem

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