1.0.0

Added

• Global integer DefaultContext allows you to override the default amount of
  context lines (default 0).
• Function NewFromPath(path string, region ctxerr.Region) (ctxerr.Ctx, error)
  returns a new Ctx based on a path to an existing file.
• Method Ctx.Error() implementing the error interface, replacing Ctx.String().
• Function Parse(line string) (*Ctx, error) parses typical linter output into
  Ctx structs.
  Returns error ErrNoMatch when unlikely to be a linter error.
  • Currently supports output of gometalinter and npm run lint.
• Command ctx enhances stdin with pretty errors and optional context.

Changed

• Exported Position (a Region consists of two position).
• Exported all fields of Ctx and Region.
• Proper handling of Region with zero columns. It is now treated as a full line.

Removed

• Methods of Ctx: WithPath, WithContext and WithHint as they're now exported as fields.
• Struct Error and method Ctx.ToError(). Use the exported Err field of Ctx instead.

Fixed

• Tabs are now properly handled when padding and pointing to regions.
• No more panic when pointing outside of the line (to the right).