Rebasehelper

Added
- Added category for *R* packages
- Added `make test-podman` as an alternative to `make test-docker`
- Added `--skip-upload` option (to be used in conjunction with `--update-sources`)
- Added check that all sources for the new version are present
- Added SPEC hook for escaping macros in comments

Changed
- `--get-old-build-from-koji` now tries to get specific version build (as opposed to the latest one)
- Implemented parsing of multiline macros and shell expansions in SPEC files
- **rebase-helper** can now handle multiline enquoted strings in *%prep* section
- Refactored `GitPatchTool` to make the rebase process more robust and to preserve as much of the original downstream patches as possible
- `git mergetool` is now run again if there are some unresolved conflicts left
- Associated comments are now removed along with patches

Fixed
- Fixed populating list of logs on build failures
- Added missing abort after failed `git am`
- Fixed processing SPEC files without *%prep* section
- Fixed several issues in **ruby-helper** SPEC hook
- Fixed unwanted expansion of *%autosetup* macro
- Fixed automatic rebulding based on build log hooks result
- Fixed removal of *%doc* and *%license* files in subpackages

Removed
- Removed `requests-kerberos` support and switched to `requests-gssapi` exclusively

Added
- Implemented build log hooks and added **files** hook to detect and fix missing/unpackaged files

Changed
- Refactored and simplified all plugins

Fixed
- Fixed not listing all argument choices while generating documentation
- Fixed error in parsing rpmdiff output
- Fixed insertion of extra blank lines to a SPEC file after removing patches

Removed
- Removed unneeded packages from base Docker image

Added
- Added **PathsToRPMMacros** SPEC hook for transforming paths in *%files* section
- Added `--favor-on-conflict` option to prefer upstream or downstream changes with conflicting patches

Changed
- Extended **PyPIURLFix** SPEC hook to incorporate the new https://pypi.org website
- Made processing of patches in a SPEC file more robust
- Rewritten functional test to use an artificial package designed to check most aspects of the rebase process
- `pylint` is now run with Python 3 only, as Python 2 variant is no longer supported
- Code refactoring, simplified `SpecFile` class
- Checkers are no longer required for **rebase-helper** to run, only available checkers are used

Fixed
- Fixed bug in **licensecheck** checker when used with **json** output tool
- Fixed SPEC hook tests
- Fixed strangely acting lookaside cache upload progressbar
- Fixed downloading of SRPMs with `--get-old-build-from-koji`
- Fixed building usage documentation

Added
- Added **licensecheck** checker for detecting license changes
- Added another *not-so-verbose* verbosity level

Changed
- Refactored `utils` module

Fixed
- Fixed **abipkgdiff** detecting changes in only one object file
- Fixed uploads to lookaside cache
- Fixed broken consequent build retries

Added
- Added `--apply-changes` option to apply *changes.patch* after successful rebase
- Implemented *.gitignore* update with `--update-sources`

Changed
- Extended `README.md`
- Cleaned up constants

Fixed
- Fixed crash after failed rebase when no checkers were run

Added
- Added possibility to make changes to specfile between build retries
- Added **CommitHashUpdater** SPEC hook
- Added **hackage** versioneer
- Added support for uncompressed tar archives
- Created integration environment for test suite to isolate it from the internet
- Added `--update-sources` option to update *sources* file and upload new sources to lookaside cache

Changed
- Switched to `requests` library for downloads
- Made error messages from **Koji** builds more useful
- Reworked handling of downstream patches
- Changed package build process to build first SRPMs and then RPMs
- Divided checkers into categories running at different phases of rebase
- **Koji** build tool refactored to be better adjustable and extensible
- Colorized **rebase-helper** output and enhanced log messages
- Significatly improved rebase summary and report

Fixed
- Fixed `TestConsoleHelper.test_get_message()` test
- Fixed bug in **rpmdiff** output analysis
- Fixed some code styling errors and a large number of issues found by static analysis