0.6.0 bumps
Fix empty images getting written

Fixes #163, #184 and #187.
Merge pull request #188 from kevva/fix

Fix empty images getting written
0.6.1
changelog
Add Windows CI
Use image-min 0.4.2
Merge pull request #202 from kevva/imagemin

Use image-min 0.4.2
0.7.0 updates
`image-min` is `imagemin` now
Merge pull request #205 from kevva/rename

`image-min` is `imagemin` now
`use` option instead of `configure`
Merge pull request #207 from kevva/use

`use` option instead of `configure`
various tweaks
0.7.0
path and mkdirp appear to not be used
Merge pull request #213 from Trott/rm-unused-modules

path and mkdirp appear to not be used
Drop mkdirp dep
Caching original image size before optimization

If the source and destination folder for the tasks are same, then origSize is same as the optimized image size. This shows the false message 'already optimized' even when the optimization of images takes place.
Merge pull request #224 from karannewthakkar/master

Caching original image size before optimization