v0.3.0

MutableArithmetics v0.3.0

Diff since v0.2.22

Closed issues:

• Implement MA for Base.Rational (#33)
• BangBang convention (#107)
• IsNotMutable (#108)
• Export or not export (#110)
• JuMP failing tests on new release (#122)

Merged pull requests:

• Implement MutableArithmetics for Rational (#104) (@blegat)
• Export all non-internal symbols (#117) (@blegat)
• NotMutable -> IsNotMutable (#118) (@blegat)
• Renaming following BangBang.jl convention (#121) (@blegat)
• Fix hygiene of promote_operation (#123) (@odow)