Added additional primitive functions for floating point complex numbers

[SomeRandomiOSDev]

Added public functions exp, log, log10, log2, sin, asin, sinh, cos, acos, cosh, tan, atan, and tanh for working with Complex values where Scalar is of type Float, Double, or Float80.

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (1.1.0@e8bca05). Click here to learn what that means.
The diff coverage is 100%.

@@          Coverage Diff           @@
##             1.1.0     #2   +/-   ##
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  Coverage         ?   100%           
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  Files            ?      6           
  Lines            ?   1177           
  Branches         ?      0           
======================================
  Hits             ?   1177           
  Misses           ?      0           
  Partials         ?      0

Impacted Files	Coverage Δ
Tests/ComplexTests/FunctionsTests.swift	100% <100%> (ø)
Sources/Complex/Functions.swift	100% <100%> (ø)

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