v0.5.2

SoftPosit v0.5.2

Diff since v0.5.1

Closed issues:

• Precompilation warnings (#76)

Merged pull requests:

• conversion from irrationals (#75) (@milankl)
• remove duplicate int conversions (#77) (@milankl)
• fix sin, cos, and exp (#78) (@oscardssmith)
• avoid overflow on exp and friends. (#79) (@oscardssmith)