Feat/free content with markdown + new theme

[matcornic]

• Flexible templating with Markdown content
• Changed layout of dt and dl
• New flat theme
• Pretty tables in plain text
• Minor fixes

[codecov-io]

Codecov Report

Merging #9 into master will increase coverage by 1.03%.
The diff coverage is 99.35%.

@@            Coverage Diff             @@
##           master       #9      +/-   ##
==========================================
+ Coverage   97.42%   98.45%   +1.03%     
==========================================
  Files           2        3       +1     
  Lines         388      907     +519     
==========================================
+ Hits          378      893     +515     
- Misses          5        8       +3     
- Partials        5        6       +1

Impacted Files	Coverage Δ
default.go	100% <100%> (ø)	⬆️
hermes.go	77.77% <80%> (-0.49%)	⬇️
flat.go	99.53% <99.53%> (ø)

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