GH-251: Release 1.5.0

[zeptometer]

This release includes following changes (other than dependabot-related PRs)

• GH-245: Support satysfi-0.0.7 #246 Support satysfi v0.0.7 #245: Support satysfi-0.0.7 by zeptometer
• Add Pager.to-size api and update SATySFi's version #156 Add Pager.to-size api and update SATySFi's version by yasuo-ozu
• Upgrade jest-pdf-snapshot to 0.5.4 #104 Upgrade jest-pdf-snapshot to 0.5.4 by zeptometer
• add TreeMap and TreeSet #140 add TreeMap and TreeSet by nyuichi
• Fast regexp #138 Fast regexp by nyuichi
• Fix 'Parser.alt' about accumulated errors #130 Fix 'Parser.alt' about accumulated errors by gfngfn
• remove zrbase from dependency #136 remove zrbase from dependency by nyuichi
• make floor/ceil/round/truncate IEEE754-compliant #21 make floor/ceil/round/truncate IEEE754-compliant by nyuichi
• add Fn.fix #135 add Fn.fix by nyuichi
• Use native exp log & add Float.e #134 Use native exp log & add Float.e by nyuichi
• Add Char.to-codepoint #128 Add Char.to-codepoint by puripuri2100
• Add string cmpare functions #127 Add string cmpare functions by puripuri2100

[nyuichi]

🎉