Does PG support in place upgrade

	Compose (@composeio)
4/26/16, 1:24 PM You can now upgrade your #PostgreSQL 9.4 to 9.5 easily at Compose. buff.ly/1WRsFFu #RDBMS

Based on the above tweet it seems that PG has no native way of doing an inplace upgrade of a db. How do users upgrade db of tera byte size. 

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