v0.8.15

CommonMark v0.8.15

Diff since v0.8.14

Merged pull requests:

• Remove URIs dependency (#80) (@MichaelHatherly)
• Remove JSON dependency (#81) (@MichaelHatherly)
• Reduce stored entity data (#82) (@MichaelHatherly)

Closed issues:

• HypertextLiteral.jl + CommonMark.jl = 🤯 (#31)
• benchmark/: simplify (#61)
• [Bug?] CommonMark Markdown Table cells are not CommonMark leaf blocks (#66)