Fix release date for v2.0.3

Merge pull request hypermodeinc#1273 from dgraph-io/ibrahim/release/v…

…2.0-cherry-pick-v2.0.3

Cherry-pick commits for v2.0.3

fix release date for v1.6.1

Fix release date for v1.6.1 (hypermodeinc#1271)

Fix changelog for v2.0.2

Merge branch 'master' into HEAD

Update CHANGELOG for v2.0.1 release. (hypermodeinc#1181)

(cherry picked from commit 23a73cd)

Rename option builder from WithInmemory to WithInMemory. (hypermodein…

…c#1169)

The name of the option builder func should be spelled the same as the
option name itself.

The godoc already has the func documented as "WithInMemory".

Update changelog for v2.0.0. (hypermodeinc#1117)

Badger v2.0.0-rc4