fixed issue that line comment is also terminated by end of file
moreover excluded line separator and paragraph separator
completed rule for WysiwygString
simplified rule for AlternativeWysiwygString
added odd escape sequence \?
moreover changed to allow for a single octal digit
fixed issue with named character entities
completed rule for DecimalFloat
fixed issue with spaces in SpecialTokenSequence
Merge pull request #2 from linkrope/master

Fixes according to chapter Lexical of the Language Reference