Primer commit del sistema separado falta mejorar mucho

vendor/symfony/clock/CHANGELOG.md

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+CHANGELOG
+=========
+
+7.1
+---
+
+ * Add `DatePoint::getMicrosecond()` and `DatePoint::setMicrosecond()`
+
+6.4
+---
+
+ * Add `DatePoint`: an immutable DateTime implementation with stricter error handling and return types
+ * Throw `DateMalformedStringException`/`DateInvalidTimeZoneException` when appropriate
+ * Add `$modifier` argument to the `now()` helper
+
+6.3
+---
+
+ * Add `ClockAwareTrait` to help write time-sensitive classes
+ * Add `Clock` class and `now()` function
+
+6.2
+---
+
+ * Add the component