ci: add Go 1.11.x

Bump version

file: fix incorrect multiline comment handling when write out (go-ini…

…#157)

section: fix s.keyHash not updated with data overwrite (go-ini#149)

parser: support SkipUnrecognizableLines (go-ini#150)

Bump version

Bump version

Bump version

file: support multiline comments

file: use lock to secure concurrent operations on sections (go-ini#135)