fix(hsla): enable decimal values in hsla

# Please enter the commit message for your changes. Lines starting
# with '#' will be ignored, and an empty message aborts the commit.
#
# Author:    Kristie Yorkston <kyorkston@gmail.com>
# Date:      Fri Oct 4 12:04:28 2019 +0100
#
# interactive rebase in progress; onto b0762e9
# Last commands done (2 commands done):
#    pick 7fc252e build(package.json): update deps
#    edit 9dffda2 feat(hsla): enable decimal values in hsla
# Next commands to do (2 remaining commands):
#    edit 4f630a9 feat(hsl): enable decimal values in hsl representation
#    pick bb466f9 fix(hsl(a)): hsl(a) decimal support
# You are currently splitting a commit while rebasing branch 'version-3-4-2-release' on 'b0762e9'.
#
# Changes to be committed:
#	modified:   src/color/parseToRgb.js
#	modified:   src/color/test/__snapshots__/parseToRgb.test.js.snap
#	modified:   src/color/test/__snapshots__/transparentize.test.js.snap
#	modified:   src/color/test/parseToRgb.test.js
#	modified:   src/color/test/transparentize.test.js
#
