v0.9.1: Support forward slashes in strings

This release introduce support for optionally-escaped forward slashes in string, which improve JSON compatibility.
This is especially important in the D ecosystem, as Vibe.d escapes forward slashes by default.

What's Changed

• fix flow style sequences and collections events in test suite by @Herringway in #298
• add .pdb files to gitignore by @Herringway in #304
• Fix #302: Support escaped forward slashes by @Geod24 in #303

Full Changelog: v0.9.0...v0.9.1