v0.3

• Add --only-labelled flag to images to shorten visualization to only include images that are labelled. (@gkovacs81)
• Add --incremental flag to images to show incremental size increase instead of cumulative.

$ sha1sum dockviz_*
038f2433f65f2f1f697577110b9c24fbe66a666c  dockviz_darwin_amd64
26959dd3c83554e2453b659491178ecad57ed2a9  dockviz_linux_amd64
b1797c401fc87be90395e9c1b9ed30d5f5d31478  dockviz_linux_arm
$ sha256sum dockviz_*
41ddaeb809883b58470ac79b40ea64be2cf3a3f388ba0a2d88a3296ec74ee724  dockviz_darwin_amd64
aabf6d6b43a1c3b006642ab06d1e88b0e2c71520e3ab58a8842e52f769a3d055  dockviz_linux_amd64
e8228886babb7113c5467e38fdbf3f86dc05f743cc08aab359ddf27353e784da  dockviz_linux_arm
$ md5sum dockviz_*
2e30d785f7c4979fa18a0b42eb6c5cec  dockviz_darwin_amd64
372d07af91111c3864383768db8c1921  dockviz_linux_amd64
65cdf0680d6332164d64b3fca2c0c024  dockviz_linux_arm