Release v2.7.0

Commits since last release:

• see above
• pass headers along in version checker as well

Release v2.6.0

Commits since last release:

• clean up

• Merge pull request #36 from groupby/f/authTokens

  add auth token support

• add auth token support

Release v2.5.14

Commits since last release:

• update elasticsearch client library

Release v2.5.13

Commits since last release:

• retries on ES search errors

Release v2.5.12

Commits since last release:

• more description

Release v2.5.11

Commits since last release:

• add subtasks in one atomic operation

Release v2.5.10

Commits since last release:

• up connect timeout for elasticsearch

Release v2.5.9

Commits since last release:

• convert to error

Release v2.5.8

Commits since last release:

• faster node

Release v2.5.7

Commits since last release:

• log errors