v0.2.15

AxisKeys v0.2.15

Diff since v0.2.14

Merged pull requests:

• support setting a single element by names/keys (#110) (@aplavin)
• fix display error on nightly (#160) (@kpobrien)

Closed issues:

• Map function to slices with index labels (#158)
• error displaying KeyedArray on nightly (#159)