refactor: doerg는 publisher와 결합

test/net/deertopia/doerg/element_test/first-paragraph-under-first-section.org

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+#+title: first paragraph under first section
+
+first paragraph is here and not under the first heading
+
+* first heading
+
+second paragraph

test/net/deertopia/doerg/element_test/first-paragraph-under-heading.org

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+#+title: first paragraph under a heading
+
+* first heading
+
+first paragraph is here and not in the first section

test/net/deertopia/doerg/element_test/greater-elements.org

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+#+title: greater elements test
+
+* a headline/section
+
+this should be a greater element

test/net/deertopia/doerg/element_test/paragraph-ending-in-bold-surrounding-latex.org

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+#+title: bold-final paragraph surrounding latex
+
+first part of *paragraph*
+\begin{equation*}
+\text{some \LaTeX \}:)}
+\end{equation*}
+last part of paragraph

test/net/deertopia/doerg/element_test/paragraph-ending-with-latex.org

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+#+title: paragraph ending with latex
+
+here is the paragraph,
+\begin{align*}
+\text{and here} &
+\\ & \text{is the \LaTeX}
+\end{align*}

test/net/deertopia/doerg/element_test/paragraph-surrounding-latex.org

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+#+title: paragraph surrounding latex
+
+first part of paragraph
+\begin{equation*}
+\text{some \LaTeX \}:)}
+\end{equation*}
+last part of paragraph

test/net/deertopia/doerg/element_test/paragraph-surrounding-separate-latex.org

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+#+title: paragraphs surrounding separate latex
+
+a paragraph!
+
+\begin{gather*}
+\text{and now, an unrelated latex fragment}
+\end{gather*}
+
+more unrelated text

test/net/deertopia/doerg/element_test/paragraph-with-multiple-latex.org

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+#+title: paragraph with multiple latex environments
+
+* interleaved
+
+first part of paragraph
+\begin{equation*}
+\text{first \LaTeX\ environment}
+\end{equation*}
+second part of paragraph
+\begin{equation*}
+\text{second \LaTeX\ environment}
+\end{equation*}
+
+* fenceposted
+
+first fencepost
+\begin{equation*}
+\text{first fenceposted \LaTeX\ environment}
+\end{equation*}
+second fencepost
+\begin{equation*}
+\text{second fenceposted \LaTeX\ environment}
+\end{equation*}
+third fencepost

test/net/deertopia/doerg/element_test/paragraph-with-separate-latex.org

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+#+title: paragraph with separate latex
+
+a paragraph!
+
+\begin{gather*}
+\text{and now, an unrelated latex fragment}
+\end{gather*}