naga 0.3.1

Shader translation infrastructure
Documentation
# Change Log

## v0.3.1 (2021-01-31)
  - wgsl:
    - support constant array sizes
  - spv-out:
    - fix block decorations on nested structures
    - fix fixed-size arrays
    - fix matrix decorations inside structures
    - implement read-only decorations

## v0.3 (2021-01-30)
  - development release for wgpu-0.7
  - API:
    - math functions
    - type casts
    - updated storage classes
    - updated image sub-types
    - image sampling/loading options
    - storage images
    - interpolation qualifiers
    - early and conservative depth
  - Processors:
    - name manager
    - automatic layout
    - termination analysis
    - validation of types, constants, variables, and entry points

## v0.2 (2020-08-17)
  - development release for wgpu-0.6

## v0.1 (2020-02-26)
  - initial release