rename setsizes! to Base.resize!

[stevengj]

resize! is the standard name for this functionality in Julia. Also, the Vec and Mat setsizes! methods were inconsistent (the former put the global size first, then the local size as keywords, whereas the latter was the reverse); in both cases the resize! function is now Julian in that it takes the global sizes as the first (albeit optional) arguments, and the local sizes as keywords.

[codecov-io]

Current coverage is 6.96%

Merging #23 into master will increase coverage by +0.03% as of aae53bd

@@            master    #23   diff @@
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  Files           17     17       
  Stmts         9698   9704     +6
  Branches         0      0       
  Methods          0      0       
=====================================
+ Hit            673    676     +3
  Partial          0      0       
- Missed        9025   9028     +3

Review entire Coverage Diff as of aae53bd

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