Tests

Don't clone env on each call of Expr::eval #2353

Job	Run time
Clippy (linter)	1m 14s
Build without default features	1m 23s
Check intra-documentation links	2m 14s
Test JNI(Android) bindings	1s
Test Swift(iOS) bindings	3m 11s
Run JS tests and publish alpha versions	21m 54s
Code formatting (rustfmt)	16s
Tests on ubuntu-latest	5m 19s
Code coverage in tests	22m 50s
Tests on windows-latest	11m 33s
Tests on macOS-latest	4m 31s
	1h 14m 26s

Provide feedback