Some updates#14

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shmatt wants to merge 3 commits intosaasu:masterfrom

intellis-team:master

Commits on Jan 8, 2020

Added binary support (invoice PDF), fix for InvoiceStatus

Matt Tew
authored and
shmatt
committed
Changed GetRequest to use a Lazy singleton of HttpClient
shmatt
committed

Commits on Jan 24, 2020

Set connection to close
shmatt
committed