Table 1.0 + fixes and improvements to coerce

[tlienart]

Minor release as compat bump is breaking.

closes #7 and #9

[codecov-io]

Codecov Report

Merging #10 into master will decrease coverage by 2.52%.
The diff coverage is 96.42%.

@@            Coverage Diff             @@
##           master      #10      +/-   ##
==========================================
- Coverage     100%   97.47%   -2.53%     
==========================================
  Files           7        7              
  Lines         194      198       +4     
==========================================
- Hits          194      193       -1     
- Misses          0        5       +5

Impacted Files	Coverage Δ
src/autotype.jl	97.91% <100%> (-2.09%)	⬇️
src/coerce.jl	94.44% <100%> (-5.56%)	⬇️
src/convention/coerce.jl	98.24% <90%> (-1.76%)	⬇️
src/schema.jl	97.05% <0%> (-2.95%)	⬇️

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