Httprunner

**Changed**

- change: override variables strategy, step variables > extracted variables from previous steps

**Fixed**

- fix: parameters feature with custom functions
- fix: request json field with variable reference
- fix: pickle BufferedReader TypeError in upload feature

**Added**

- feat: implement `parameters` feature

**Fixed**

- fix: validate with variable or function whose evaluation result is "" or not text
- fix: raise TestCaseFormatError if teststep validate invalid
- fix: raise TestCaseFormatError if ref testcase is invalid

**Fixed**

- fix: missing setup/teardown hooks for referenced testcase
- fix: compatibility for `black` on Android termux that does not support multiprocessing well
- fix: mishandling of request header `Content-Length` for GET method
- fix: validate with jmespath containing variable or function, e.g. `body.locations[$index].name`

**Changed**

- change: import locust at beginning to monkey patch all modules
- change: open file in binary mode

**Added**

- feat: add optional message for assertion

**Fixed**

- fix: ValueError when type_match None
- fix: override referenced testcase export in teststep
- fix: avoid duplicate import
- fix: override locust weight

**Added**

- feat: integrate [locust] v1.0

**Changed**

- change: make converted referenced pytest files always relative to ProjectRootDir
- change: log function details when call function failed
- change: do not raise error if failed to get client/server address info

**Fixed**

- fix: path handling error when har2case har file and cwd != ProjectRootDir
- fix: missing list type for request body

**Added**

- feat: log client/server IP and port

**Fixed**

- fix: avoid '.csv' been converted to '_csv'
- fix: convert har to JSON format testcase
- fix: missing ${var} handling in overriding config variables
- fix: SyntaxError caused by quote in case of headers."Set-Cookie"
- fix: FileExistsError when specified project name conflicts with existed file
- fix: testcase path handling error when path startswith "./" or ".\\"