Added test input file "in.txt"
Partial revert of "Changed error message formatting"

This reverts commit 166a9f1db44d246af6c113299c216005b8f71ee4.
Modified StreamTokenizer syntax configuration
Added debug methods for easier testing of lexer
Variable declaration formatting
Changed ID matching to use a regex
fixup! Variable declaration formatting
Minor raiseError message text reformatting
Removed / and * from wordChars (would interfere with binops)
Removed whitespaceChars() from StreamTokenizer syntax
Added TODO markers for manual comment handling
Added null-token checks with new changes to scan()
Implemented manual comment handling
Fixed infinite loop bug when EOF found while comment mode is on
Don't save lastToken if toReturn is null (messes up handling of '-')
Eclipse formatter changes
Fixed multi-line comment-related error handling
Eclipse formatter changes