utils/immutableTools: remove(), removeIn(), fromJS() (#589)
utils/immutableTools: remove(), removeIn(), fromJS() (#589)

* utils/immutableTools: add remove and removeIn helpers

* utils/immutableTools: fromJS

quiltdata/quilt-compiler,quiltdata/quilt-compiler,quiltdata/quilt,quiltdata/quilt,quiltdata/quilt-compiler,quiltdata/quilt,quiltdata/quilt,quiltdata/quilt-compiler,quiltdata/quilt