v1.5.0

AzStorage v1.5.0

Diff since v1.4.0

Closed issues:

• Build failure (#26)

Merged pull requests:

• force a single thread on windows (#28) (@samtkaplan)
• retry on curl error code 6 (#29) (@samtkaplan)
• bump MS API version (#30) (@samtkaplan)
• add Base.cp methods (#31) (@samtkaplan)