Shots no longer pass through reinforced glass
Added --ff-only to 'git pull upstream master'.

Ensures that no commits have been made directly to master.
Revert "Fix some more makefile stuff"

This reverts commit cc31d07b9836637a2854060d3a881fa006a8cc1b.
Delete version.h on make clean
Flamethrower fixes
Laser beams pass through, but do not destroy, glass
Delete world option bugfix
Leaping monsters can no longer teleport through windows
Added Advanced Techniques section
Expanded monmove can_move_to function to take into account various game conditions
Disallow leather patch duplication by cutting
Survival kit floors are now 'indoors' to provide protection from rain.
stop animals suiciding on certain terrain, fields and traps
indent fix
tiny animals don't trigger landmines
Merge pull request #828 from fergus-dall/make-fix

Fix problems intoduced in cc31d07
Merge pull request #835 from Catacstone/no_point_depatching

Disallow leather patch duplication by cutting
Change able_inside() to use a custom heuristic for determining inside-ness to disallow furniture construction adjacent to floor tiles.
season length 0 is bad
Merge many small bugfixes.