Dictknife

- this is latest version of support 3.5

- drop 3.5 support
- adding swaggerknife merge command, (100), (86)
- jsonknife's bundle action support jsonreference (94)
- jsonknife's bundler fix conflict automatically (101), when primitive input
- dictknife's diff support jsonpatch's output
- dictknife's shape output using jsonpointer (88)
- loading, Yaml include hash (105), quoted output, as default
- (fix) swaggerknife, tojsonschema json2swagger (96)
- (refactor) jsonknife lazy import (95)
- (WIP) initial work for open api3.0 (103)

- bundle, prevent infinite recursion
- dictknife cat, extra arguments
- drop line cat
- modification
- transform
- dictknife mkdict, new command
- dictknife cat, fix --size option
- dictknife cat, support spreadsheet(extra)

- fix bug of dictknife diff, broken output is appeared, when input file is csv
- fix bug of dictknife diff, 0 is not treated as empty

- suport markdown table format
- support dictknife diff with --output (default is diff)

- adding dictknife diff --output-format dict option
- support loading markdown table format