bunch of fixes to do with spacing and ordering and tests

[tlienart]

• closes [bug] indented paragraphs in comments (or elsewhere) taken as code #234, closes Penta-ticks #219, closes Bold inline code #222, closes Bold x* #223, closes barebones output #145
• blocks in maths envs are now disabled so that there's no bleeding of code in maths etc ([bug] indented paragraphs in comments (or elsewhere) taken as code #234)
• adds tests to remove some spacing issues before or after insertions (e.g. if \eqref{..} is followed by a . , there shouldn't be a space between the insertion and the . something like (9)., this is more annoying than would appear due to the fact that the Julia Markdown parser removes whitespaces a bit arbitrarily). this also fixes Bold inline code #222
• reinforced escaping to not have \* or \_ confuse bold or emph environment (Bold x* #223)
• penta ticks to fence triple ticks (Penta-ticks #219) and reinforcement of the parser as a result allowing the use of a token validator when using a greedy rule to allow the discarding of a stack
• adds jd2html a function that allows somewone to directly test the conversion from a judoc-markdown string to html (should be doc'd)

• patch release

[codecov]

Codecov Report

Merging #235 into master will increase coverage by 0.21%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #235      +/-   ##
==========================================
+ Coverage   87.93%   88.15%   +0.21%     
==========================================
  Files          28       28              
  Lines        1293     1317      +24     
==========================================
+ Hits         1137     1161      +24     
  Misses        156      156

Impacted Files	Coverage Δ
src/converter/html_blocks.jl	95.23% <ø> (ø)	⬆️
src/parser/md_tokens.jl	100% <ø> (ø)	⬆️
src/parser/tokens.jl	100% <100%> (ø)	⬆️
src/converter/md_blocks.jl	96.59% <100%> (+0.16%)	⬆️
src/JuDoc.jl	100% <100%> (ø)	⬆️
src/converter/md.jl	98.29% <100%> (+0.04%)	⬆️
src/converter/fixer.jl	100% <100%> (ø)	⬆️
src/parser/ocblocks.jl	97.8% <100%> (+0.07%)	⬆️

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