panic fix (issue #33) with test case
add EXTENSION_NO_SPACE_LISTS flag to allow making list without a space in both orderedlist and unorderedlist
add flag that allowing 1 space indent for list items
Revert "add EXTENSION_NO_SPACE_LISTS flag to allow making list without a space in both orderedlist and unorderedlist"

This reverts commit 2a318c3006108da50fd5827f6958f3c2e456cdbb.

Conflicts:
	block_test.go
	markdown.go
Merge branch 'master' of github.com:athom/blackfriday