v0.5.10

ApproxFunBase v0.5.10

Diff since v0.5.9

Merged pull requests:

• Remove allocations in hasnumargs (#102) (@jishnub)
• Make the Fun constructor type-inferrable (#103) (@jishnub)
• Fix convert methods to always return the exact type (#104) (@jishnub)
• avoid recursion in intpow (#105) (@jishnub)
• Avoid pirating dot (#106) (@jishnub)
• Replace non-breaking spaces with regular ones (#107) (@jishnub)
• Avoid splatting in operator sum and multiplication (#108) (@jishnub)
• Improve PlusOperator performance (#109) (@jishnub)
• Fix bug in TimesOperator constructor, and add Multiplication equality (#110) (@jishnub)