Per https://github.com/exercism/docs/blob/81399dc1c87e384be9fada77f599df38f795691d/contributing-to-language-tracks/exercise-readmes.md#exercise-readmes

simple-linked-list: simplify example implementation [Fix #568]

https://github.com/exercism/xjava/issues/555#issuecomment-304126241

change: remove "final" from test class declaration

Closes: #571

* binary-search: make test class less DRY
* binary-search: use collections emptylist and singletonlist

Use idiomatic string interpolation in build file

* difference-of-squares: remove "final" from test class

* Update DifferenceOfSquaresCalculatorTest.java

acronym: update to latest canonical data

linked-list: exercise generics via tests

triangle: update starter implementation

luhn: update starter implementation

sum-of-multiples: update starter implementation

secret-handshake: update starter implementation

largest-series-product: remove "final" from class declaration

diamond: remove "final" from test class declaration

see #571

See #571

minesweeper: remove "final" from class declaration

perfect-numbers: remove "final" from class declaration

rectangles: remove "final" from class declaration

queen-attack: remove "final" from class declaration

see #571

see #571

see #571

See #571

hello-world: explain UnsupportedOperationException in HINT.md file [Fix #350]

robot-simulator: remove "final" keyword from test declaration

See #571

flatten-array: remove final from class name

ocr-numbers: remove "final" keyword from test declaration

secret-handshake: remove "final" keyword from test declaration

See #571

See #571

see #571

gigasecond: standardize starter implementation

Add kindergarten-garden and run-length-encoding to settings.gradle

wordy: remove "public final" from test class