v0.8: Monster bounties, small UI improvements

Many bugfixes and small UI improvements, cleaning up in preparation for major content update.

Major gameplay changes:

• 'Amplify' status now works gradually, similar to 'protected'
• Bounty items/quests, rewarding player for killing certain type of monster

Minor gameplay changes:

• 'Telescope' item now provides an extra encounter option
• Several new encounters added
• Some items are locked until you unlock corresponding resource
• Late-game monsters are locked until you unlock all game stages
• Refined and documented end turn / end stage event order

Minor UI changes:

• Display habitats in monster info
• Card/item/monster lists can show/hide locked entities
• Display counters on some items
• Document rounding direction for 'protected', 'vampiric', 'evasion' statuses and several items
• Some images updated

Balance:

• Some encounters rebalanced
• Nerfed cards: Embrace Chaos, Rewind

New items/quests:

•   5 bounty items
•   5 bounty quests

Selected bugfixes:

• Telescope sometimes predicted random encounter leader incorrectly
• Fix losing some item effects and quest completion on save/load
• Fix hanging when killing last monster also draws a card, with e.g. Pea Pod