added special char for horizontal centering (#3)
fixed line width calculation for correct h-centering
added h-centering to sample.md (#3)
do not show workspace file in folder view
use plus instead of backticks in unordered lists - looks nicer
beautifying README
corrected include path for Debian derivatives (closes #46)
various improvements

support for multi-line list items in unordered lists
unordered lists no longer support nested code blocks
code blocks start after a blank line only (makes ordered lists possible)
added comments and removed unused code
version bump