v0.2.1

Octonions v0.2.1

Diff since v0.2.0

Closed issues:

• Improving numerical stability (#4)
• isreal? (#11)

Merged pull requests:

• Fix the ci badge in README.md (#12) (@hyrodium)
• Remove Base function imports (#13) (@hyrodium)
• Make abs, abs_imag, inv, and / resistant to under/overflow (#14) (@sethaxen)
• Add rng argument to octorand function (#15) (@hyrodium)