Version 0.4

- tlib#InputList(): Up/Down keys wrap around list
- tlib#InputList(): FIX: Problem when reducing the filter & using AND
- tlib#InputList(): FIX: Problem when using shift-up/down with filtered lists
- tlib#InputList(): Made <a-numeric> work (can be configured via
- tlib#InputList(): special display_format: "filename"
- tlib#Object: experimental support for some kind of OOP
- tlib#World: Extracted some functions from tlib.vim to tlib/World.vim
- tlib#FileJoin(), tlib#FileSplit(), tlib#RelativeFilename()
- tlib#Let()
- tlib#EnsureDirectoryExists(dir)
- tlib#DirName(dir)
- tlib#DecodeURL(url), tlib#EncodeChar(char), tlib#EncodeURL(url)