v0.10.0

MolecularGraph v0.10.0

Diff since v0.9.0

Closed issues:

• No charge on carbon chain SVG (#25)
• Gaps in allene-like double bonds (#26)
• outerplanarity test failure on Julia 1.6 (#44)
• Re-design of MCS calculation functions (#57)

Merged pull requests:

• Generalize exception type (#59) (@timholy)