Add a inventory to bookshelf, in which books are unstackable
Make grass tile better.
Add tin
dig upwards for papyrus and cactus
Merge branch 'dig_up' of https://github.com/CasimirKaPazi/minetest_game into hversion
Merge branch 'master' of https://github.com/cnelsonsic/minetest_game into hversion
Merge branch 'master' of https://github.com/arsdragonfly/minetest_game into hversion
Merge branch 'tin' of https://github.com/Zeg9/minetest_game into hversion