Improve typescripting, add yieldTime parameter

[cmdcolin]

This PR improves typescripting mostly, by updating to typed versions of abortable-promise-cache, bgzf-filehandle, etc.

Also adds yieldTime parameter

This PR started with possibly reducing the cache size, but will probably split into another issue for that if needed

[codecov[bot]]

Codecov Report

Merging #138 (78317d1) into master (2ac4f39) will increase coverage by 0.69%. The diff coverage is 92.85%.

@@            Coverage Diff             @@
##           master     #138      +/-   ##
==========================================
+ Coverage   87.77%   88.47%   +0.69%     
==========================================
  Files           7        7              
  Lines         589      590       +1     
  Branches      161      144      -17     
==========================================
+ Hits          517      522       +5     
+ Misses         71       68       -3     
+ Partials        1        0       -1     

Impacted Files	Coverage Δ
src/csi.ts	91.48% <83.33%> (+0.51%)	:arrow_up:
src/tabixIndexedFile.ts	88.11% <93.10%> (+1.75%)	:arrow_up:
src/indexFile.ts	91.30% <100.00%> (-0.37%)	:arrow_down:
src/tbi.ts	96.35% <100.00%> (+0.02%)	:arrow_up:

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