#397: Replace singletons with @functools.lru_cache() decorator

• Replace BlockchainParams() singleton with @functools.lru_cache()
• Replace HeadBlock() singleton with @functools.lru_cache()
• Replace UDValue() singleton with @functools.lru_cache()
• Replace CurrencySymbol() singleton with @functools.lru_cache()
• Replace ClientInstance() singleton with @functools.lru_cache()

Close #397 (closed).

changed milestone to %0.11.0

added Network label

requested review from @moul

assigned to @moul

added 3 commits

• de52c120 - [mod] #397 (closed): Get rid of CurrencySymbol() singleton
• 3ac2e624 - [mod] #397 (closed): Get rid of HeadBlock() singleton
• e3e46a29 - [mod] #397 (closed): Get rid of UDValue singleton

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changed title from #397 (closed): Get rid of singletons to #397 (closed): Replace singletons with @functools.lru_cache() decorator

changed the description

changed the description

added 5 commits

• 32cf9988 - [mod] #397 (closed): Replace BlockchainParams() singleton with @functools.lru_cache()
• 6b1dc44f - [mod] #397 (closed): Replace HeadBlock() singleton with @functools.lru_cache()
• 5f3ada62 - [mod] #397 (closed): Replace CurrencySymbol() singleton with @functools.lru_cache()
• 68de8cc5 - [mod] #397 (closed): Replace UDValue() singleton with @functools.lru_cache()
• f09837a9 - [enh] #397 (closed): Replace ClientInstance() singleton with @functools.lru_cache()

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approved this merge request

merged