Merge pull request citusdata#191 from citusdata/develop_v1x

Merge v1.6.2 changes

Update README.md (citusdata#176)

Format epel link appearance

Merge pull request citusdata#155 from citusdata/develop

CStore v1.6

Update release notes

Merge pull request citusdata#121 from citusdata/develop

cstore v1.5

Compatibility fix for Citus copy command

Merge pull request citusdata#83 from citusdata/develop

version 1.4

Merge pull request citusdata#66 from citusdata/develop

Version 1.3 release

Merge pull request citusdata#51 from citusdata/develop

Version 1.2 release

Merge pull request citusdata#51 from citusdata/develop

Version 1.2 release