Cache intermediate NJK template compiles#1529

Merged

zachleat merged 10 commits into11ty:masterfrom slightlyoff:njk-cache

Feb 6, 2021

+157-22

Commits on Nov 1, 2020

Disgusting hack to prevent NJK from over-compiling
slightlyoff
committed

Commits on Nov 26, 2020

Less aggressive cache invalidation for a small speedup.
slightlyoff
committed

Commits on Dec 3, 2020

Optmises the hottest loop inside Nunjucks for another 10-20%.
slightlyoff
committed

Commits on Dec 4, 2020

Re-enables NJK's internal caching by invalidating caches on change.
slightlyoff
committed