v1.3.1

• removed panic 'args are not using' from Erf.Attach() method

v1.3.0

• removed Top method for Erf
• implemented Copy and CopyByTop methods for Erf

v1.2.3

• implemented Erf.TagIndex method

v1.2.2

• implemented TagsLen and PCLen methods
• improved godoc for Top method

v1.2.1

• implemented Erf.UnwrapAll method
• improved Erf.Format, Erf.Attach, Erf.Tags methods
• implemented and applied Erf.Top method

v1.2.0

• improved godoc
• implemented Erf.Attach2 method
• implemented Erf.Tags method
• implemented + flag for Erf.Format method
• improved Erf.Format method to show non-Erf errors

v1.1.3

• implemented Wrapp function

v1.1.2

• inserted '//go:build examples' into example1.go

v1.1.1

• implemented getPadWidPrec() func
• implemented padding for empty lines of Erf format '%x'

v1.1.0

• improved and changed verbs and formats in Format() methods.
• improved examples
• improved godoc