0.2.0: Develop (#10)

* Develop of 0.2.0 established

* Use argument label for self modifying code

* Globally accessible public macros prefixed with c64lib_ prefix

* Scroll macro global version

* incText global version

* Working on tiles 2x2

* CHANGES.md file introduced

* Tile 2x2 progress

* Initialization of cfg fixed

* Working on tile 2 ongoing

* Shift left and right added

* fbne used

* spec for shift left

* spec for shift right

* spec for shift top and bottom

* top left shift implemented and tested

* top right shift added

* bottom right shift added

* shift left bottom added

* tiles2 renamed to tiles-common

* tiles-2x2 separated

* Shift left color ram without test

* Gradle wrapper added

* gradlew made x

* migrated to gradle retro assembler plugin

* Migrated to 0.3.0

* circleci + update tool versions

* Migrate to retro 1.0.0

* shift color ram to the left implemented and tested

* shift color ram to the right implemented

* shift color ram to the right tested and fixed

* color ram shifts top / bottom - dummy impl and tests provided

* color ram top implemented and tested

* color ram bottom implemented and tested

* even window sizes tests

* color ram bottom implemented and fixed

* renamed to conform _t2_ prefix

* fixes on styling

* split macros into separate files

* dependency clean up

* tests for diagonal shifts of color ram are written

* further tests for diagonal color ram shifts written

* simple diagonal case implemented

* another bit of top left color ram added

* Code size measurement debug

* top right in progress

* top right even

* Bottom diagonal naive approach

* KA 5.11 + even specs update

* Fix on diagonal scrolling of color ram

* Docu updated

* Update Ra to 1.0.1

* scroller impl

* Better offset indexing

* init tests fixed

* use set8

* mapDefinition is accessed as a pointer now

* decodeScreenRight

* macro renamed

* Update CHANGES.md

* Update README.md

* Color RAM left column drawing

* Initial spec for decode ... right

* further spec work

* further work on test

* More tests

* work on decode screen right

* decode screen right fixed

* tests improved

* 0.5,0 implemented

* 1.5,0 tested

* color ram decoder

* decode into color ram (right col) tests finished

* test refactoring

* rex example added

* fix on import

* remove example

* maybe we don't need z something

* fix on scroll to right

* decode screen params in sync with shift params

* fix on decode right

* test fixed

* Fix in color ram shift

* fix (yet tests to be fixed)

* some tests fixed

* prepare for 0.2.0

* Change log update

* fix on badges

* fix color ram scroll right