Enhance log message and screenshot

• Release capture page screenshot
• Auto capture page screenshot if test fails
• Handle alert

Enhance wait for url request and response

• Support url validation with Regular expression
• Support body validation with Regular expression

v0.3.0

• Update demo web site and example scripts
• Add system test into build pipeline
• Wait Until Page Contains Element
• Wait Until Page Does Not Contain Element
• Wait Until Element is Hidden
• Wait Until Element Is Visible
• Wait Until Page Contains
• Wait Until Page Does Not Contain
• Wait Until Element Contains
• Wait Until Element Does Not Contain
• waitForRequest
• waitForResponse
• waitForFunction
• waitForNavigation

0.2.1

• Hot fix support pypi md content

v0.2.0

• Browser Control
• Selector Adapter
• Click Element control
• Form Element control