Handle duplicated dates in summary plot

Merge pull request #1499 from markusdregi/pandas_duplicates

Pandas drops duplicates

Formatting changes

2.1.7

Raised micro version to 2.1.7

Improved error message

2.1.6

Increased micro version to 2.1.6

Fixed memory leak in EclGrid

2.1.5

Raised micro version to 2.1.5

release/2017.04/final

Merge pull request #1495 from akva2/2017.04_final

bump packaging version to 2017.04 final

release/2017.04/rc2

Merge pull request #1494 from akva2/2017.04-rc2

bump packaging version to 2017.04 rc2

Fixed bug in node blacklist

2.1.4

Raised micro version to 2.1.4

Fixed bug with GenKw and RPC

2.1.3

Raised micro version to 2.1.3

IES + Summary leak

2.1.2

Raised micro version to 2.1.2

grid binding fix

2.1.1

Raised micro version to 2.1.1