Previously we would refuse to parse anything as raw inline if
it was in the blockCommands list. Now we allow exceptions
if they're listed under ignoreInlines in inlineCommands.
This should make it easier e.g. to include an \hspace
between two side-by-side raw LaTeX tables.
Otherwise things like `\noindent foo` break and turn into
`\noindentfoo`.
Affects `-f latex+raw_tex` and `-f markdown` (and other formats
that allow `raw_tex`).
Closes#1773.
For example, in
\begin{tabular}{>{$}l<{$}>{$}l<{$} >{$}l<{$}}
each cell will be interpreted as if it has a `$`
before its content and a `$` after (math mode).
These were confusing.
Now we rely on the +raw_tex or +raw_html extension with latex
or html input.
Thus, instead of
--parse-raw -f latex
we use
-f latex+raw_tex
and instead of
--parse-raw -f html
we use
-f html+raw_html
