Bump version to 1.8

[billti]

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[github-actions]

Benchmark for a8dae48

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Test	Base	PR	%
Array append evaluation	345.3±6.73µs	342.9±18.78µs	-0.70%
Array literal evaluation	168.7±1.08µs	188.0±14.64µs	+11.44%
Array update evaluation	420.0±3.52µs	419.2±20.31µs	-0.19%
Core + Standard library compilation	23.3±0.79ms	25.3±1.42ms	+8.58%
Deutsch-Jozsa evaluation	5.0±0.08ms	4.9±0.06ms	-2.00%
Large file parity evaluation	34.4±0.13ms	34.5±0.85ms	+0.29%
Large input file compilation	14.3±0.33ms	15.9±1.24ms	+11.19%
Large input file compilation (interpreter)	56.0±2.19ms	57.5±2.07ms	+2.68%
Large nested iteration	33.0±0.24ms	33.4±2.12ms	+1.21%
Perform Runtime Capabilities Analysis (RCA) on Deutsch-Jozsa sample	1588.6±92.15µs	1601.1±111.04µs	+0.79%
Perform Runtime Capabilities Analysis (RCA) on large file sample	8.0±0.13ms	8.2±0.18ms	+2.50%
Perform Runtime Capabilities Analysis (RCA) on teleport sample	1446.9±69.05µs	1475.9±124.42µs	+2.00%
Perform Runtime Capabilities Analysis (RCA) on the core and std libraries	28.0±0.25ms	28.8±0.49ms	+2.86%
Teleport evaluation	93.0±3.71µs	93.2±3.72µs	+0.22%