v0.14.0

Tensorial v0.14.0

Diff since v0.13.4

Merged pull requests:

• Make == faster (#203) (@KeitaNakamura)
• convert for Tensor is now more widely available (#204) (@KeitaNakamura)
• Check InexactError to construct Tensor from AbstractArray (#205) (@KeitaNakamura)
• Convert to symmetric tensor in vonmises (#206) (@KeitaNakamura)
• Set version to 0.14.0 (#207) (@KeitaNakamura)