MatthewHeun/IEATools: v0.1.60

IEATools 0.1.60 (2021-09-06) No longer discriminating by sign when summing EIOU after routing Pumped storage plants and Own use in electricity, CHP, and heat plants. This change avoids a situation where positive electricity EIOU by Pumped storage plants in Japan caused a problem when writing the allocation template. Better error messages when energy imbalance is too large to fix. Expanded many tests to verify initialization functions work for all valid years of IEA sample data. Now able to read IEA Extended Energy Balance from 2020 and 2021 releases. Many new tests to cover all valid years of IEA data. Up to 1073 tests, all passing. Test coverage remains at 100 %