To do that, split up the Accounts objects and the instruction
implementations.
GPL code is only used when the "enable-gpl" feature is enabled. That
means compiling the program or running tests need explicit feature
activation now.
This gives us better compatibility with released anchor versions.
Instead of using AccountLoaderDynamic<MangoAccount>, we now use
a standard AccountLoader<MangoAccountFixed>. This will generally work
(except for load_init(), which is dangerous).
A new trait, MangoAccountLoader, provides load_full(), load_full_mut()
etc on the AccountLoader<MangoAccountFixed> to create accessor structs
that can read and write to the dynamic part of the mango account data.
* Perp instruction logging
* Onchain funding calculation
* perp_spot_transfers field on perp positions
* Logging on register token, perp market
* Additional fields on update token index logging
* maker and taker volume fields on perp position
* Perps: fix position lifetime; explicit closing
When an order is placed and the position needs to be created, the
settlement token is marked as in use. The perp position and the in-use
flag are only released with the new perp_close_position instruction.
* Tests: Factor out common floating-point comparisons
* Rename PerpClosePosition -> PerpDeactivatePosition