Re-land StaticArrays removal

[maleadt]

Ref #83, this works now (without regressing performance) due to GPUCompiler changes. Also includes #85.

[codecov]

Codecov Report

Merging #98 (23ad275) into master (c376fdc) will decrease coverage by 1.04%.
The diff coverage is 21.73%.

@@            Coverage Diff             @@
##           master      #98      +/-   ##
==========================================
- Coverage   41.90%   40.85%   -1.05%     
==========================================
  Files           9       10       +1     
  Lines         420      443      +23     
==========================================
+ Hits          176      181       +5     
- Misses        244      262      +18     

Impacted Files	Coverage Δ
src/kernel.jl	100.00% <ø> (ø)
src/layout.jl	16.21% <ø> (ø)
src/array.jl	21.73% <21.73%> (ø)

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