Continual-inference

Fixed
- FLOPs module registration compatibility with ptflops >=v0.6.8.

Added
- Call-mode specific functions in `co.Lambda`

Added
- Support for functor in `co.Lambda`

Removed
- `nn.LayerNorm` from automatically convertible modules

Added
- `nn.LayerNorm` to automatically convertible modules

Added
- `ParallelDispatch` module.
- `Conditional` predicate print in `__repr__`.

Fixed
- Sequential `padding` computation.
- `Lambda` `__repr__` function prints.

Removed
- CI testing for python v3.6.

Added
- Added `phantom_padding` to `Residual`.
- Added `receptive_field` property.
- Added `Reshape` module.

Changed
- Rename `forward_shrink` argument to `auto_shrink` in `Delay`.
- Torch requirement to v1.9.
- Replace `Lambda` unsqueeze_step with takes_time and new default to False.

Fixed
- `padding` property in sequence.
- `delay` property in sequence.
- `strict` mode in `load_state_dict`.

Removed
- Assertion error in `BroadcastReduce` for modules with different delays.