Loader: Add ldr:ro->LoadNro()

Update README.md (#70)

Loader: fix missing NULL assignment

Loader: Automatically unload NRRs on service close.

Loader: Implement ldr:ro->UnloadNrr()

Loader: Implement ldr:ro->LoadNRR(). NOTE: No sigchecks, at the moment.

Loader: fix missing reassignment in AutoCloseMap

Loader: Start work on LoadNRR, Add AutoCloseMap

Loader: Greatly simplify mapping logic, add CodeMemory mapper.

Loader: Add NRRInfo to RegisteredProcess, refactor Registration::

Loader: Service ldr:ro on <= 2.3.0

Loader: Implement ldr:ro->Initialize()

Loader: Push ldr:ro stub.

Loader: is_64_bit -> is_64_bit_addspace

Loader: Save process->is_64_bit as prep for ldr:ro

Change read_sd_file semantics to return size read.

Boot: Fix JSON mappings to be RW (instead of RO)

Boot: Initial skeleton and 1.0.0 GPIO voltage switch.

Fusee: Fix BisPartition enum to correctly identify partitions. ...

* BisPartition_t was missing SAFE, meaning User and System were using wrong key_source

* Normalize tabs to spaces

* Merge User and System BisPartition_t because they are the same key anyway

* Remove extra newline

ENUMs for APB Slave Security Enable registers (#67) ...

Exosphere: add enums for the APB_MISC_SECURE registers.

Stratosphere: Add .jsons for loader, sm

Loader: Properly map BSS as rw.

Loader: Fix bugs in CreateProcess(), which now succeeds on hardware (1.0.0)

Loader: Fix type definitions in picosha2.hpp

Loader: Finish Loader::CreateProcess().

Loader: Include picosha2 as a SHA256 generator.

Loader: Implement all remaining parts of CreateProcess except LoadNsoSegment.

Loader: Implement argument passing.

Loader: Implement most of LoadNsosIntoProcessMemory

Loader: Implement RandomUtils (for ASLR)