Revert "Set aptitudes for removed skills to -99 (N/A)."

This reverts commit 39b2da4f5f57d9a614c671c847c4b9a7dad3509a.
Revert "Remove a pointless vault."

This reverts commit 0b302e991e1b76e0928cf60a897919152089ba50.
Revert "Remove a few in-code references to LO acceleration."

This reverts commit 6718f452530e2438afc04244bc18dbef791a2476.
Revert "Remove references to LO movement speed changes."

This reverts commit 1d816f89d8f9c1c8f82cbd39510622349d912829.
Revert "Rare insects, polymoths, chaos butterflies and bumblebees, back together!"

This reverts commit b5aec581b1ad18e6eefb77947e822c089f778d6f.
Revert "Join Snakebite with Sniper, blowgun Assassin, Accuracy and LCS."

This reverts commit 15fdb53f75a829c72a08e10b654277c2c737d64a.
Revert "Remove the blowgun of the Assassin"

This reverts commit fff51581865b2b78f8262e0ef2cd761914786870.
Revert "Tag the noncrumbling statue vaults as extra."

This reverts commit e732ba084a1d6fb588c07c396619d580d25502fa.
Revert "Fix the statues in four dk's vaults.  They tended to crumble!"

This reverts commit d6a04bcbdd3ef275fc9846073b6f2e53a5013da6.
Revert "Don't generate Sniper."

This reverts commit 345611fe4c33ec475874eb58a659e94e7118649a.
Revert "Remove the Polymorph spell"

This reverts commit de3bacb8c123a86127c12d7a76ed6176653bbb02.
Revert "Likewise, remove orc slaying."

This reverts commit 4dbb6ee0fb53a618cd167095707a95124fda71ea.
Revert "Remove reaching from weapons when upgrading saves; misc cleanup."

This reverts commit 6d63218842fccde0660e653fe8f6bc7e066f778f.
Revert "Remove Song of Shielding"

This reverts commit 118bf1a1ac04a081ec9e3823a9ecb5a19127b8c5.
Revert "Don't place additional webs over time in Spider"

This reverts commit b0ee51420f310e463707fb4fb6c2b0f9e11b8eee.
Revert "Always identify wands on zap"

This reverts commit c7ef5b85fb05ef13598df80dda79916cf4ec28bc.
Revert "Remove the reaching brand"

This reverts commit c72be133eeb0bc13f3a316be0a8388f9b8fc3cea.
Revert "Remove rock worms from monster Summon Vermin"

This reverts commit dd890a18065a11cbb4c182f4a24f8671f07e36c9.
Revert "Remove some trapped loot vaults"

This reverts commit fbf0dc1ee176df95d9b9908de049d14cae6f1fa9.
Revert "Don't produce animal skins outside starting gear and acquirement."

This reverts commit 09e2829bc6e0143a93ed5ed21f102a332ff09423.