v0.17.0 - More flexibility in SearchTerminals and many bugfixes

• Made SearchTerminals dynamic meaning it can be used in contexts where the targets aren't known at transformation init-time.
• SearchTerminals will now test all terminal tokens if the invalid token type is set as the token type to test
• Moved most of the specific search terminals stuff to SearchTerminalsImpl
• Added constructor that only takes a terminal token type to SearchTerminalsImpl
• Added SearchTerminalsDynamic for using it dynamically with caching
• Made all custom node types implement MoveCheckable which fixes a bug with DynamicParseTreeWalker getting into an infinite loop while searching for a replaced node
• Fixed another bug with DynamicParseTreeWalker that resulted in an NPE if a child array was null
• Improved MoveCheckable to also check deeply nested replacements
• Introduced the concept of child transformations which allows transformations indirectly added to a phase collector through Transformation#append or Transformation#merge to also receive job parameters
• Simplified EmptyTerminalNode since all nodes may receive a previous node now
• Added tests for the fixed bugs (hopefully making sure they won't regress)

Full Changelog: v0.16.1...v0.17.0