Merge pull request #232 from lbl-srg/Annex60Sync

Merged Annex60 library and removed undesirable annotations with Evaluate=true to close #231
Replaced modelled with modeled.
Changed script to run all tests.
Changed some models to avoid unspecified initial equations.
Updated release notes.
Changed capitalization.
Added sections for next release.
Updated release number and date.
Added missing each keyword.
Improved documentation

This is for #246
Merge pull request #247 from lbl-srg/issue246_incidenceAngle

Improved documentation
Added missing 'each' declaration.
Accepted new reference results.

This is for #248
Modified initial value calculations.

This is for #248.
Reverted change in media.

This is for #248.
Changed initial conditions to fixed initial
Added initialization in constrainedby declaration.

This is for #248. It was done so that examples that extend this base class inherit this setting.
Updated initial conditions.

This is for #248.
Added new examples and update reference results.

This is for #248.
Changed medium to air and water.

This is for #248