Merge pull request #821 from qtxie/fix-1

FIX: random/seed doesn't reset sequence.
FIX: issue #820 (Missing space beside a SPACE item when print a block with SPACEs in it)
FIX: missing random.reds in includes.r
DOCS: Start of datatype comparison matrix
DOCS: improvements to datatype comparison matrix template
Merge pull request #823 from qtxie/issue-820

FIX: issue #820 (Missing space beside a SPACE item when print a block wi...
Merge remote-tracking branch 'red/master' into float-datatype.

Conflicts:
	build/includes.r
FEAT: added POWER action for float! datatype.