Fixed bugs in updates with release info

[ansasaki]

When release information were provided (using "-r"), updates which added symbols but not removed were failing because the element used to point to the release to be modified was obtained in a generator, which ceases to exist in the end of the for loop. Changing the loop to iterate over the actual elements of the releases list solved this bug.

The strings in the result of get_info_from_release_string() were not being converted to upper case. This was leading to errors when searching for releases to be updated when release info is provided.

[coveralls]

Pull Request Test Coverage Report for Build 127

• 9 of 9 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.01%) to 97.851%

---

Totals
Change from base Build 124:	0.01%
Covered Lines:	730
Relevant Lines:	736

---

💛 - Coveralls

[codecov-io]

Codecov Report

Merging #69 into master will increase coverage by <.01%. The diff coverage is 100%.

@@            Coverage Diff            @@
##           master     #69      +/-   ##
=========================================
+ Coverage   96.59%   96.6%   +<.01%     
=========================================
  Files           4       4              
  Lines         734     736       +2     
  Branches      186     188       +2     
=========================================
+ Hits          709     711       +2     
  Misses          6       6              
  Partials       19      19

Impacted Files	Coverage Δ
src/smap/symver.py	96.54% <100%> (ø)	:arrow_up:

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 4927c1c...dbb02b9. Read the comment docs.