v1.0.4

Rotations v1.0.4

Diff since v1.0.3

Merged pull requests:

• Add documentation with Documenter.jl (#169) (@hyrodium)
• Add support for calculating eigenvalues and eigenvectors (#170) (@hyrodium)
• Add logo for the document (#172) (@hyrodium)
• Add log(::Rotation) (#173) (@hyrodium)
• Update docs (#174) (@hyrodium)
• Bump version to v1.0.4 (#176) (@hyrodium)