add skrollr v0.6.24
Add @vitalets's checklist-model
Merge pull request #752 from PeterDaveHello/skrollr_v0.6.24

add skrollr v0.6.24
Merge pull request #754 from erickrdch/cheklist-model

Add @vitalets's checklist-model
Adding 1.3.6 version of slick
Merge pull request #755 from kenwheeler/master

Adding 1.3.6 version of slick
mainfiles for old versions