Rebasehelper

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

Added
- Added **npmjs** and **cpan** versioneers
- Added possibility to specify custom py.test arguments
- Added possibility to customize changelog entry
- Added version check to abort rebase if requested version is not newer than current
- Added separate tox tasks for linting
- Implemented **rpmbuild** and **mock** SRPM build tools
- Added possibility to configure rebase-helper with configuration file
- Added possibility to blacklist certain SPEC hooks or versioneers
- Created `rebasehelper/rebase-helper` Docker Hub repository

Changed
- Made several speed optimizations in the test suite
- Tests requiring superuser privileges are now automatically skipped if necessary
- Simplified build analysis and made related log messages more useful

Fixed
- Fixed documentation builds on readthedocs.org broken by *rpm distribution* requirement
- Fixed reading username and e-mail from git configuration
- Added missing dependencies to Dockerfile
- Fixed processing of custom builder options
- Added workarounds for RPM bugs related to `%sources` and `%patches`
- Fixed several unhandled exceptions
- Fixed parsing tarball filename containing certain characters

Added
- Added `rpm-py-installer` to install `rpm-python` from pip
- Implemented detection of package category (*python*, *perl*, *ruby*, *nodejs*, *php*)
- Added **RubyGems** versioneer
- Added **RubyHelper** SPEC hook for getting additional sources based on instructions in SPEC file comments

Changed
- Value of *Version* and *Release* tags is now preserved if there are any macros that can be modified instead
- Versioneers and SPEC hooks are now run only for matching package categories
- Bash completion is now generated from source code, so it is always up-to-date

Fixed
- Prevented unwanted modifications of *%prep* section
- Fixed unexpected removal of rpms and build logs after last build retry
- Added files are no longer listed as removed in **rpmdiff** report