Update BCT.md to bring it into the modern age. (#482) ...

* Bring BCT.md into the modern age. It was terribly outdated.

* Added notes on debugging modes

loader: fix ldr:ro unmap semantics for < 3.0.0

Update cheat docs with latest opcodes (#479) ...

* Update cheat docs with latest opcodes

This covers changes made to Opcode 10 as well as the new 0xC0 opcode

* Corrected Opcode 10 documentation

loader/ams_mitm: Change Down -> Held in API

loader: Actually use hidKeysHeld

dmnt-cheat: extend StoreRegisterToAddressOpcode some more

loader/ams_mitm: hidKeysHeld, not hidKeysDown (and remove workaround)

dmnt-cheat: Fix a few bugs in vm.

dmnt-cheat: add other register source to new condition opcode

dmnt-cheat: amend inline docs

dmnt-cheat: Add register conditional vm instruction

dmnt-cheat: Implement real workaround for 6.0.0+ kernel bug

Add 64-bit IDA binaries to gitignore

loader: fix ldr:ro mapping error on < 3.0.0

exo: fix SE driver coherency bug (closes #384)

creport/fatal: fix time-retrieval functionality

dmnt-cheat: workaround for 6.0.0+ kernel bug.

fs_mitm: Fix mismatched new[] / delete (#389) ...

* fs.mitm: Fix mismatched new[] / delete

Using delete instead of delete[] on a pointer given by new[] is
undefined behaviour.

For memory sources, malloc/free are used because cleaning up is tricky
when data can be either allocated with new (RomfsHeader) or new[]
(metadata).

* set.mitm: Fix mismatched new[] / delete

fs.mitm: fix two cases of inverted logic

Atmosphere: Bump version to 0.8.5

0.8.5: amend changelog

Add 0.8.5 changelog ahead of release, fix keypress docs.

Add cheats.md

docs: add dmnt.md

fatal: only set display magnification on 3.0.0+

fss: seems ext_csd is not initialized by then

fss: how many commits does it take to fix one line of code?

fusee-secondary: fix previous generalization

fusee: dynamically read NAND num_sectors (thanks @shchmue!)

default-settings: Language.