Rewrite

Refactor of the module with several feature additions

Added

• Searching/installing/managing multiple Chocolatey sources (#5)
• DSC Compatibility, including additional package arguments
• 'Upgrade' packages using the 'latest' required version keyword (#14)
  • Thanks to @matthewprenger for help with this
• Package and Choco.exe installation can run without confirmation prompts by passing the -AcceptLicense flag (#17)
  • Thanks to @Gregoorio for the idea
• Support for CoreCLR-based PowerShell (7.0.1 or higher) (#18)
  • Thanks to @sgryphon for bringing this up
• Availability via PSGallery on CoreCLR-based PowerShell (#18)

Changed

• To facilitate readability, broke up main module file into several function files
• Grouped by 'public' functions used by PackageManagement vs 'private' functions that contain much of the shared logic for interacting with Chocolatey
• Common logic, such as building commands, sending them to Chocolatey, and parsing results, are consolidated across multiple PackageManagement cmdlets into a single set of helper functions
• Choco.exe installed automatically without any user prompts if -Force flag is passed
• Uninstall behavior to also remove all unnecessary dependencies
• Invokes Chocolatey via native API by default under PowerShell 5.1 and below for significant performance gains
  • Thanks to @jirkapok for the inspiration

Fixed

• Get-Package no longer lists 'chocolatey' twice (#12)
• Improved performance when downloading large packages with embedded installers
• Choco.exe once again installs automatically after TLS 1.2 changes to chocolatey.org (#16)
  • Thanks to @kendr1ck for help with this
• Suppress Choco prompts during uninstall and upgrade actions

Removed

• With Chocolatey-managed upgrades via the provider now available, the package provider no longer unilaterally upgrades Chocolatey on invocation if already installed
• No longer displays progress bars in order to simplify passing data between functions via the pipeline in a way that's idiomatic to PowerShell