allow types to be defined by bare type expressions

[codecov-io]

Codecov Report

:exclamation: No coverage uploaded for pull request base (v0.2.0-dev@890396e). Click here to learn what that means. The diff coverage is 100%.

@@              Coverage Diff              @@
##             v0.2.0-dev     #145   +/-   ##
=============================================
  Coverage              ?   95.79%           
=============================================
  Files                 ?       42           
  Lines                 ?     2020           
  Branches              ?        0           
=============================================
  Hits                  ?     1935           
  Misses                ?       85           
  Partials              ?        0

Impacted Files	Coverage Δ
ramlfications/parser/parser.py	100% <100%> (ø)

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[freddrake]

Converted skips to decorators.