- Add `ext2_free_inode`;

- Change field `name` of  `ext2_dirent_t`, from fixed-size string to `char *`;
- Write simple and clean, individual `ext2_bitmap_set` and `ext2_bitmap_clear` functions;
- Standardize naming of index conversion functions (from inode to group and block, and vice versa);
- Complete function `ext2_free_block`;
- Complete function `ext2_free_inode`;
- Properly free inode when unlinking file with zero `links_count`;
- Properly clean `ext2_dirent_t` when unlinking file;

- Create a full-size direntry inside the `ext2_direntry_search_t` structure;
- Simplify the way directory search works, and the number of checks;
- Use the new structure inside `ext2_direntry_search_t`;
- Unlink the file at the end of `t_write_read` test;
- Activate all tests again;

…a warning and not an error (keep monitored);