0.1.24

• A new parser/generator built on top of an AST that simplifies code greatly and allows to implement new
  backends much faster.
• Sum types (type Expr = IfExpr | MatchExpr | IntegerLiteral).
• B-tree map (sped up the V compiler by ~10%).
• v fmt -w.
• The entire code base has been formatted with vfmt.
• Generic structs.
• SDL module.
• Arrays of pointers.
• os: is_link(), is_dir(), exists().
• Ranging through fixed size arrays.
• Lots of fixes in ORM and vweb.
• The first tutorial: building a simple web application with vweb.
• Match expressions now must be exhaustive.
• freestanding: malloc()/free().
• ++ is now required instead of += 1 for consistency.
• Interpolated strings now allow function calls: println('val = $get_val()').
• string.replace_each([]) for an efficient replacement of multiple values.
• More utf8 helper functions.
• -prealloc option for block allocations.
• type aliases.
• Running v with an unknown command will result in an error.
• atof implementation in pure V.
• Enums can now have negative values.
• New filepath module.
• math.factorial.
• ftp module.
• New syntax for casting: val as Type.
• Fewer libc functions used (soon V will have no dependency on libc).