Address Aqua type piracy errors

[ReubenJ]

The following methods from HerbGrammar were picked up by Aqua as pirated. They should be defined here because their input arguments are all types defined here in HerbCore.

The interface to AbstractTrees.jl

HerbCore.jl/src/rulenode.jl

Lines 19 to 21 in 1bf674c

	# Interface to AbstractTrees.jl
	AbstractTrees.children(node::AbstractRuleNode) = get_children(node)
	AbstractTrees.nodevalue(node::AbstractRuleNode) = get_rule(node)

These RuleNode/Hole Constructors

HerbCore.jl/src/rulenode.jl

Line 43 in 1bf674c

function RuleNode(ind::Int, grammar::AbstractGrammar)

HerbCore.jl/src/rulenode.jl

Line 48 in 1bf674c

function RuleNode(ind::Int, _val::Any, grammar::AbstractGrammar)

HerbCore.jl/src/rulenode.jl

Line 81 in 1bf674c

function UniformHole(domain::BitVector, grammar::AbstractGrammar)

Base.show and Base.getindex definitions for AbstractGrammars

HerbCore.jl/src/grammar.jl

Lines 23 to 29 in 1bf674c

	function Base.show(io::IO, grammar::AbstractGrammar)
	for i in eachindex(grammar.rules)
	println(io, i, ": ", grammar.types[i], " = ", grammar.rules[i])
	end
	end
	Base.getindex(grammar::AbstractGrammar, typ::Symbol) = grammar.bytype[typ]

Addresses Herb-AI/HerbGrammar.jl#96 and Herb-AI/HerbGrammar.jl#97.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.54%. Comparing base (2d5dcc6) to head (e3189be).

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #31      +/-   ##
==========================================
+ Coverage   72.52%   73.54%   +1.01%     
==========================================
  Files           1        2       +1     
  Lines         182      189       +7     
==========================================
+ Hits          132      139       +7     
  Misses         50       50              

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[pwochner]

No complaints.