v0.7.0

Quaternions v0.7.0

Diff since v0.6.1

Closed issues:

• Should Complex be convertible to Quaternion? (#62)
• Drop normalize for quaternions (#69)
• Add constructor like Complex{Float64} (#81)
• Drop inefficient functions for rotation? (#86)
• quat([1,2,3,4]) should return Vector{Quaternion{Int}} (#94)
• Bug in log() for negative reals? (#114)

Merged pull requests:

• update quat(::Array) to return Array{<:Quaternion} (#95) (@hyrodium)
• Remove norm field and update normalization functions (#108) (@sethaxen)
• Remove rotation-related functions (#111) (@hyrodium)
• Remove compatibility with Complex (#113) (@hyrodium)
• Fix log for negative quaternions (#115) (@sethaxen)