v2.5.7

Bug Fixes:

• #2539 - fix(engine-server): style and class attribute serialization
• #2530 - fix(engine-core): fix LightningElement configurable/enumerable props
• #2538 - fix(template-compiler): Change error thrown on missing sourceCodeLocation to warning

Improvements:

• #2536 - refactor(engine-core): move api-helpers into api
• #2545 - refactor(engine-core): rename 'default' shadow support mode to 'reset'

Internal:

• #2544 - test(template-compiler): increase code coverage