v1.0.5 upgrade go version

Full Changelog: v1.0.4...v1.0.5

check perf stats

• compare perf stats between two different approaches
• optimized version is put in release

internal improvements

• add benchmark for intersect string operation

cosmetic updates

Cosmetic Update

• readme fix md linter issues
• example usage in readme fix

fix doc example bug

Godoc update

• clean up pkg doc
• fix example impl of lib

add pkg doc and cosmetics

godoc cosmetics

• add pkg doc
• doc.go to capture documentation
• examples

add examples for doc

Godoc structures

• add example for doc

code restructure

Restructure code

• packages removed and flat hierarchy introduced for go doc sync