fix time format without timezone

#63 #61

add SOURCE_DATE_EPOCH value support

fix #61

0.6.4

fix git2 crates 0.13.18 build error by rust version 1.54.0

0.6.3

#57

0.6.2

#56

0.6.1.1

Update README.md

update doc

0.6.1

Update Cargo.toml

gen time with rfc3339

0.6.0

Update check.yml

update doc

0.5.25

update md

add print_build_in function, fix cargo tree dep source

• #50
• #49
• #51