VIM: add vim-preview plugin etc.
VIM: add vim-preview plugin etc.

- add vim-preview plugin
    <space>: show tag in preview window
    <leader>ii: edit found tag file
- Tune NERDComment
    add space between delimeters
    /*asd*/ -> /* asd */
- New split window added below/right to current window
- Circular move between window feels good
- New abbrev
    u32,i32,u8,i8 -> uint32_t, int32_T,uint8_t,int8_t

tfing/config