:sparkles: New JP2Writer Features

[John-P]

• [x] Writing JP2 with user specified number of resolutions (must be ascending powers of 2).
• [x] Writing JP2 with user specified colourspaces (other than the default RGB).
• [x] Writing of a capture resolution box (MPP metadata) -- waiting on glymur issue.

[codecov[bot]]

Codecov Report

Merging #14 (754434a) into dev (8d86c8f) will increase coverage by 1.83%. The diff coverage is 85.00%.

:exclamation: Current head 754434a differs from pull request most recent head f07dd45. Consider uploading reports for the commit f07dd45 to get more accurate results

@@            Coverage Diff             @@
##              dev      #14      +/-   ##
==========================================
+ Coverage   89.62%   91.45%   +1.83%     
==========================================
  Files          12       12              
  Lines        1330     1311      -19     
==========================================
+ Hits         1192     1199       +7     
+ Misses        138      112      -26     

Impacted Files	Coverage Δ
wsic/readers.py	92.79% <ø> (+1.60%)	:arrow_up:
wsic/utils.py	95.49% <ø> (ø)
wsic/enums.py	95.58% <84.37%> (+8.37%)	:arrow_up:
wsic/writers.py	87.15% <85.71%> (+0.03%)	:arrow_up:
wsic/codecs.py	77.77% <100.00%> (+10.03%)	:arrow_up:

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