++ version changed (not SNAPSHOT)

++ AppConfig class deleted with all its usage (as conditions, blocks inside its IFs was not deleted)
++ imports optimized

++ newline characters were removed from logging calls
++ "about" page edited

++ fix: Wrong classes were used in Logger.getLogger(...) calls.
++ log messages adjusted ( explicit time removed, explicit class name removed - since these data are provided by logger automatically)

++ Acknowledgements updated in "About" page

++ all println were replaced by log.debug(...) or log.error(...)
++ unused files deleted

++ minor CSS adjustments (background and dimensions+padding)
++ "About" page updated (acknowledgments and parameters description)

++ added credits to "About" page
++ added new class with TomcatConfig parameters
++ spring-boot-starter-part version updated (from 2.4.2 to 2.4.5)

++ SimbadSearchEngine class refactored

++ fix: VizierSearchEngine was using CDSCrossmatchRequestObject for all the queries. This caused that only empty responses were obtained for queries by ID or coordinates. Queries by ID or coordinates now use VizierRequestObject.

++ Documentation reformatted
++ new documentation added (where it was missing)

++ Functionality for support of asynchronous queries
++ fileValidation added (FileValidator class)
++ radius, pagesize, and page inputs are now required (thus no exception caused by failed conversion from String to Double happens anymore - which was caused by empty input)

++ input types added to several <input> tags in index.html form (for validation) - now only numbers are possible to enter into radius, page, and pagesize inputs

++ new validations added to SearchFormInput class
++ new limits for thse validation crated in Limits class
++ new validation messages created in ValidationMSG class

++ fix: previous solution would not work for queries with different time complexity, if they would be executed one-by-one, however ended in the same moment. Then, too many queries for second service would be executed at the same time and the limit would be exceeded.

++ timeQuantumUsed flag deleted from SearchEngine and created in every other primary SearchEngine (Mast, Simbad, Vizier)
++ getters, setter created for timeQuantumUsed
++ added @Schedule methods that sets timeQuantumUsed to false for corresponding search engine and notifying general SearchEngine class
++ Now, SearchEngine iterates in an endless WHILE until all the services required were queried, however, it checks whether the service is available in a current time window of its own (timeQuantumUsed). At the end of iteration, if there is something more to do, wait() is used (waits for notification from @Schedule methods), otherwise - break from while and ResponseData is returned.
++ Limits for queries per second for each of the services can be set in Limits class

++ MASTSearchEngine methods changed to return MastResponse instance instead of ResponseForReqByPos (Basically, ResponseForReqByPos was converted into MastResponse in SearchEngine class before, now it has been moved one level above - into MASTSearchEngine)

-- unused ErrorController removed
-- several unused class fields and variables removed
-- out-commented blocks of code removed
++ DEGUB flags moved to a new class (AppConfig)
++ testing.html renamed to correct one (results.html)
++ old results.html (containing fragments) renamed to results-data.html

++ Simbad query for measurements (ASCII format) implemented

++ SearchEngine adjusted to support limitations for queries per second in order to prevent being blacklisted by one of the queried services

++ fix: tabs in results were not working properly ( all of them were highlighted, instead of active one only )

++ fix: top-left cell in table was not sticky on both left and top side (created new .sticky-lt class)

++ sticky first column in table (row number) + sticky left column in fluxes table (filter)
++ CSS file re-ordered and refactored
++ testing.html CSS-refactored
++ vertical padding decreased for medium+ screen devices in resul tables

++ responsive table heads in results

++ responsive result tables (fonts, paddings)

++ more responsive paddings added to navigation

++ fix: black 1/3-transparent background moved from index.html to fragments.html so the navigation on all the pages has it)

++ fix: responsive font-size moved from index.html to fragments.html to be same for navigation on all the pages
++ small y-axis padding added for nav-items

++ fix: index.html page reworked to flex, so the centering of the search form will be easier (without absolute position, which caused nav-links to be useless)
++ responsive font size used for navigation and form

++ responsive gutters (spacing between columns in container) was set in search form
++ responsive column widths were set for search form
++ responsive padding was adjusted for the first row of Simbad-ID results container
++ fix: responsive padding was set for the second row  of Simbad-ID results container

++ overflow-auto was set in Indentifiers results
++ responsive paddings and margins set in About page

++ responsive paddings set for Identifiers results

++ overflows in Simbad-ID results fixed (now scrollable)
++ search form centered with absolute position+top+left
++ responsive paddings set for Simbad-ID results

++ minor search form checkboxes adjustments

++ navbar adjustments
++ minor search form adjustments

++ massive design changes
++ implementation of Bootstrap support
++ Search button in search form now change its state after submit

++ J-queries are now usable for querying (id/name option of query must be chosen)

++ fix: Simbad now correctly displays number of results obtained
++ javadoc and comments written for most of the classes
++ unused fragments of code deleted

++ created default error.html page to display error code and message
++ styles created for error page
++ few styles have been split into more styles
++ few other html files edited - class tag now contains more style classes if previous class was split

++ minor refactoring - exact values extracted to Constants classes
++ rearranging of pacakges
++ XMatch now uses inputStream from uploaded file instead of creating another temporary file
++ Simbad-coord fragment div fixed: result table now has limited height and the rest of it can be displayed by scrolling

++ fixed: Crossmatch with Vizier was not working properly (Simbad response has been displayed instead)